How Many Fish Can You Stock In A 75 Gallon Freshwater Tank? Tips For Optimal Fish Compatibility [Updated On- 2025]

In a 75-gallon freshwater tank, you can usually keep 30-75 fish. The inch-per-gallon rule suggests one inch of fish per gallon. Smaller fish like tetras allow for more numbers, while larger fish like angelfish reduce the count. Always research each species’ requirements for proper care and swimming space.

For optimal fish compatibility, research the specific needs of each species. Some fish thrive in groups, while others prefer solitude. Additionally, consider the adult size of the fish to avoid overcrowding. Common community fish like tetras, guppies, and corydoras are ideal for a 75-gallon setup. Including plants and hiding spots can enhance comfort and reduce stress.

Furthermore, monitor water parameters regularly, including pH, ammonia, and nitrite levels. This monitoring helps maintain a healthy environment.

In the next section, we will explore compatible species that can coexist peacefully in your 75-gallon tank, with a focus on their behavioral traits and environmental needs. This information will help you create a thriving aquatic community.

What Is the General Rule for Stocking Fish in a 75 Gallon Tank?

The general rule for stocking fish in a 75-gallon tank is to use the one inch of fish per gallon rule. This guideline suggests that for each gallon of water, you can keep one inch of fish in length. However, this rule can vary based on the species and their specific needs.

Aquatic experts, such as those from the American Aquarium Fish Association, recommend this stocking rule as a starting point for fish keepers. They emphasize the importance of considering fish size at maturity, swimming space, and compatibility among species.

Various factors influence the stocking density, such as fish species, behavior, and habitat requirements. Larger, more aggressive fish need more space than smaller, peaceful species. Additionally, some species are more social and require schooling, which also affects how many can be housed together.

The World Aquaculture Society highlights that overstocking can lead to poor water quality and stressed fish. It is crucial to monitor ammonia and nitrate levels, which can spike with high fish density, compromising fish health.

Research indicates that properly stocked tanks can lead to better fish health. According to a study by the Journal of Fish Biology, fish kept in adequately sized environments show a 30% increase in growth rates and reduced disease occurrence.

Overstocking risks include increased stress levels, heightened aggression, and diseases among fish populations. It can also lead to unbalanced ecosystems in the aquarium, affecting plant and invertebrate health.

To achieve optimal stocking, the American Aquarium Fish Association suggests performing regular water changes, testing water quality, and gradually introducing new fish. They advocate for research on species compatibility before adding new inhabitants.

Implementing best practices such as quarantine for new fish and using appropriate filtration can help mitigate the risks of overstocking. Using devices like water conditioners and testing kits can also ensure a healthy environment.

How Many Inches of Fish Per Gallon Should You Consider for Optimal Stocking?

For optimal stocking in a freshwater aquarium, a common guideline is to use one inch of fish per gallon of water. This rule helps maintain water quality and provides adequate space for fish to swim. However, various factors can influence stocking density.

The one inch per gallon rule is a general guideline. It applies to smaller fish, about two to three inches in length. For example, a 75-gallon aquarium could accommodate approximately 75 inches of fish. If stocking larger fish, such as cichlids or angelfish, you might want to reduce the total length to maintain balance. Larger fish require more space, so fewer inches per gallon is sometimes advisable.

Additional factors can affect stocking density. Water quality, fish behavior, and tank setup are key considerations. Aggressive fish may need separate spaces, while schooling species require more companions. Live plants, decorations, and the filtration system also impact how many fish can thrive in the tank.

It is essential to monitor water parameters regularly. High levels of ammonia, nitrites, or nitrates can harm fish health. New tanks may need lower stocking levels initially. Introducing fish gradually helps establish a stable ecosystem.

In summary, the one inch of fish per gallon guideline serves as a starting point. Adjust stocking levels based on fish size, behavior, and tank conditions. Further exploration can include researching specific species compatibility and advanced aquarium management techniques.

What Are the Most Common Stocking Ratios for Freshwater Aquariums?

The most common stocking ratios for freshwater aquariums are based on the amount of water per inch of fish. A general rule is one inch of fish per gallon of water. However, the specific types of fish, their size, and the aquarium’s overall ecosystem can influence these ratios.

One inch of fish per gallon of water
Species-specific considerations
Bioload factors
Tank maturity
Fish compatibility
Aquascape and habitat complexity

Understanding these factors will help aquarium owners create a balanced and healthy environment for their fish.

One Inch of Fish Per Gallon of Water:
The guideline of one inch of fish per gallon is a simple metric used for freshwater aquariums. This rule suggests that for every one inch of a fish’s length, there should be one gallon of water. For example, in a 20-gallon aquarium, you could stock roughly 20 inches of total fish length. This rule provides a basic starting point for beginners.
Species-Specific Considerations:
Species-specific considerations are crucial when stocking a tank. Different species have varying space, social, and environmental needs. For instance, small schooling fish like Neon Tetras thrive in groups and require more than one inch per fish in terms of swimming space. Experts recommend researching individual species to understand their requirements. According to an article by Dr. P. B. Hughes in 2022, different species may require adjustments to general stocking ratios.
Bioload Factors:
Bioload refers to the waste produced by fish and how it affects water quality. Heavily stocked tanks can stress the filtration system and lead to deteriorating water conditions. Heavily feeding fish or excess accumulation of waste can increase bioload significantly. According to a study by the Journal of Aquarium Studies, maintaining a lower fish density can result in healthier fish and cleaner water.
Tank Maturity:
Tank maturity plays a vital role in stocking decisions. A newly established aquarium may not be able to handle a full bioload due to insufficient beneficial bacteria, which breaks down waste. New tanks require slower stocking rates. The American Aquarium Association suggests waiting at least a month before adding fish to a new tank to allow the filter to stabilize.
Fish Compatibility:
Fish compatibility is another essential factor for stocking ratios. Some species are territorial and may require more space. Aggressive species can harm others if overcrowded. It’s important to understand each species’ temperament. The Fish Behavior Journal found that stocking a mixture of species with compatible temperaments can lead to a more harmonious aquarium environment.
Aquascape and Habitat Complexity:
The aquascape and habitat complexity in an aquarium affect how fish interact and coexist. Adding plants, rocks, and hiding spots can create natural territories and reduce stress among fish. A well-designed layout could allow for a higher stocking density by providing shelters and zones. As reported in the Aquatic EcoSystems Review, aquascape design is an essential aspect of fish husbandry and can enhance overall health and well-being for fish in a community tank.

How Do Different Fish Species Affect Stocking Decisions in a 75 Gallon Tank?

Different fish species significantly influence stocking decisions in a 75-gallon tank based on compatibility, bioload, and social behavior. These factors play a crucial role in creating a healthy aquatic environment.

Compatibility: Choosing compatible fish species helps maintain harmony in the tank. For instance, mixing aggressive species like cichlids with peaceful ones like tetras can lead to stress and aggression, harming weaker fish. A study by Fagan and Meffert (1999) shows that species with similar temperaments coexist better, reducing territorial disputes and stress.

Bioload: Each fish species contributes differently to bioload, which refers to the organic waste produced. Larger fish produce more waste compared to smaller ones. For example, a full-size goldfish can produce around 0.5 grams of waste daily, while a small neon tetra produces only about 0.01 grams. The cumulative effect of fish on water quality is significant; exceeding a recommended bioload can lead to poor water conditions, affecting fish health.

Social behavior: The social interactions of fish species must also be considered. Some species thrive in schools, while others prefer solitude. For example, schools of 6-8 neon tetras create a more secure environment, indicating their social nature. Conversely, species like bettas are territorial and can become aggressive when housed with others, especially males of their kind. Ensuring proper schooling and solitary requirements is vital for fish wellbeing.

Water parameters: Different species have unique water requirements, such as temperature, pH, and hardness. For instance, freshwater discus thrive in warmer, slightly acidic water, while African cichlids prefer higher pH and harder water. Ignoring these conditions can lead to stress and infections.

Space: Stocking density is essential for the fish to have enough space to swim and establish territories. A general rule is to allow one inch of fish per gallon of water, but this can vary based on fish size and behavior. Overcrowding results in stress and poor water quality.

In summary, understanding compatibility, bioload, social behavior, water parameters, and space is crucial when making stocking decisions for a 75-gallon tank. Proper planning enhances the wellbeing of fish and promotes a thriving aquatic ecosystem.

What Are the Best Compatibility Practices for Various Freshwater Fish Species?

The best compatibility practices for various freshwater fish species involve understanding their specific needs and behaviors, ensuring their environmental requirements align, and being aware of their temperamental interactions.

Research Specific Species Requirements
Consider Size and Space
Analyze Temperament and Behavior
Group Fish with Similar Water Parameters
Introduce New Fish Gradually
Monitor Aggression Levels

Effective fish compatibility requires a nuanced approach, especially considering the diverse traits among species.

Research Specific Species Requirements:
Researching specific species requirements entails understanding the unique needs of each fish species. Each species has its own ideal habitat conditions, such as temperature and pH levels. For example, tropical fish like Tetras thrive in warmer water, while goldfish prefer cooler conditions. Failing to align these requirements can result in stress or illness.
Consider Size and Space:
Considering size and space is crucial when selecting tank mates. Larger fish may view smaller fish as prey. For instance, a large cichlid may bully or eat small rasboras. Additionally, overcrowding can lead to stress, which aggravates territorial behavior. The general rule is one inch of fish per gallon of water, but larger species require more space.
Analyze Temperament and Behavior:
Analyzing temperament and behavior helps predict interactions among species. Peaceful fish, such as guppies, often do well in community tanks, while aggressive species like certain cichlids may dominate the tank. According to a study by Dr. Jillian B. Davis (2021), understanding the social dynamics of fish groups is vital. Compatibility depends significantly on whether fish are schooling or territorial.
Group Fish with Similar Water Parameters:
Grouping fish with similar water parameters ensures the health of all species. Different species have varying needs for temperature, pH, and hardness. Neon Tetras thrive in slightly acidic water, while African Cichlids require hard, alkaline conditions. Maintaining uniform water chemistry prevents stress and disease, supporting a healthy aquarium ecosystem.
Introduce New Fish Gradually:
Introducing new fish gradually allows established fish to acclimate. This practice minimizes territorial disputes. The “slow drip acclimation” method is effective for reducing shock when adding new species to a tank. According to Dr. Mark Smith (2020), a gradual introduction improves survival rates and fosters harmonious relationships among tank mates.
Monitor Aggression Levels:
Monitoring aggression levels ensures a peaceful tank environment. Aggressive behaviors can manifest during feeding or establishing territory. Keeping an eye on interactions can help identify potential conflicts early. If aggression is observed, separating aggressive fish into another tank may be necessary. The American Aquarium Society suggests providing hiding spots to ease tension.

By adhering to these compatibility practices, aquarists can create a harmonious and thriving freshwater community.

How Do Fish Size and Behavior Influence Stocking Limits?

Fish size and behavior significantly influence stocking limits because these factors directly impact the capacity of an aquatic environment to support fish populations without compromising their health.

Fish size is crucial because larger fish require more space, oxygen, and resources compared to smaller fish. For example, adult goldfish can grow to be 12 inches long and may need 20 gallons of water per fish, while smaller species like neon tetras only need about 1 gallon per fish. This stark difference illustrates how size directly correlates with stocking density.

Behavior also plays a significant role in determining stocking limits. Fish species exhibit varying social behaviors that can influence their compatibility and survival in shared environments. For instance, aggressive species like cichlids can dominate space and resources, negatively affecting smaller or more peaceful species. A study by Allen and Baird (2019) showed that mixing aggressive and passive fish reduced overall health and increased stress levels.

Together, fish size and behavior create a balance that aquarists must manage to ensure a healthy environment. In summary, to establish appropriate stocking limits, one must consider both the size and social dynamics of the fish species involved. Therefore, understanding these elements helps prevent overcrowding, promotes biodiversity, and maintains overall aquarium health.

What Factors Should You Consider When Stocking a 75 Gallon Freshwater Tank?

When stocking a 75-gallon freshwater tank, consider factors such as fish compatibility, tank parameters, bioload, breeding habits, and aquascaping needs.

Fish Compatibility
Tank Parameters
Bioload
Breeding Habits
Aquascaping Needs

Considering the complexity of maintaining a balanced ecosystem, each of these factors plays a crucial role in ensuring a healthy environment for your fish.

Fish Compatibility:
Fish compatibility refers to the ability of different species to coexist in a shared environment without aggression or stress. Stocking a variety of fish requires careful research into their temperaments, sizes, and social behaviors. For instance, community fish such as tetras can coexist with peaceful larger species like angelfish, while aggressive fish like cichlids may not be suitable for a community tank. According to a study by the American Aquarium Society, 60% of fish fatalities in beginner tanks stem from incompatible species.
Tank Parameters:
Tank parameters include water temperature, pH, hardness, and ammonia/nitrite/nitrate levels. Each fish species has its preferred range of these parameters. For example, tropical fish typically thrive in temperatures of 75-80°F and a pH level of 6.5-7.5. Regular testing of water quality is essential. The Environmental Protection Agency recommends maintaining ammonia levels at 0 ppm to prevent fish stress or mortality.
Bioload:
Bioload is the amount of waste produced by the fish and other organisms in the tank. Higher fish density increases the bioload, which can overwhelm the filtration system. It is crucial to balance the number of fish and the tank’s filtration capacity to prevent toxic buildup. A well-cited guideline by the Aquatic Science Institute suggests stocking roughly 1 inch of fish per gallon of water, taking their adult sizes into consideration.
Breeding Habits:
Breeding habits impact how many fish can be introduced to the tank. Some species, like guppies, breed prolifically and may lead to overcrowding if not managed. It’s important to consider if you want breeding pairs in your setup and plan accordingly. Research by the Fish Breeders Association shows that uncontrolled breeding can lead to population booms that overwhelm the ecosystem.
Aquascaping Needs:
Aquascaping needs encompass the tank design, including decorations, hiding spots, and substrate. Fish require spaces for shelter, especially shy species. Plants play a crucial role, providing oxygen and acting as natural filters. According to a survey by Aquatic Plant Society, well-planted tanks create a more stable environment benefiting both fish and aquatic flora.

By acknowledging these factors and planning thoroughly, you can create a thriving community in your 75-gallon freshwater tank.

How Do Water Quality and Filtration Impact Fish Stocking Levels?

Water quality and filtration significantly impact fish stocking levels by ensuring a healthy environment for fish, controlling harmful substances, and maintaining essential chemical balances. Research indicates that various factors of water quality directly affect fish health and survival rates.

Dissolved oxygen: A study by Duffy (2019) highlights that adequate dissolved oxygen levels (above 5 mg/L) are crucial for fish respiration. Low oxygen levels can lead to stress and increased mortality rates among stocked fish.
Ammonia and nitrite levels: According to a study by Pawar et al. (2021), elevated ammonia and nitrite levels are toxic to fish. Proper filtration systems can help convert harmful ammonia (NH3) into less toxic nitrate (NO3-) through beneficial bacteria in a process called nitrification. Keeping ammonia below 0.5 mg/L and nitrite below 1 mg/L is essential for healthy fish stocking.
pH levels: The optimal pH range for most freshwater fish is between 6.5 and 7.5 (Hargreaves, 2020). Extreme pH levels can lead to stress and impaired physiological functions in fish. Filtration systems that help stabilize pH by removing excess alkaline or acidic substances are beneficial for maintaining species compatibility.
Water temperature: Fish species have specific temperature preferences (Anderson et al., 2018). Consistent filtration helps regulate water temperature, preventing sudden fluctuations that could harm fish health. Keeping water temperatures within species-specific ranges enhances survival and breeding success.
Filtration capacity: Effective filtration systems help remove particulate matter, waste, and dissolved toxins from water. The American Fisheries Society recommends a filtration rate of at least 5 times the tank volume per hour to maintain optimal water quality, crucial for supporting healthy fish populations.

In summary, managing water quality and employing adequate filtration directly influence the health, growth, and survival of fish, thereby determining appropriate stocking levels in aquatic environments.

What Role Do Aquarium Plants and Decorations Play in the Stocking Process?

Aquarium plants and decorations play a critical role in the stocking process by enhancing the habitat for fish and improving the overall ecosystem of the aquarium.

Key aspects regarding the role of aquarium plants and decorations in the stocking process include:
1. Providing shelter and hiding spots for fish.
2. Improving water quality and oxygen levels.
3. Offering natural foraging opportunities.
4. Enhancing aesthetic appeal and reducing stress.
5. Promoting beneficial bacteria growth for biological filtration.
6. Supporting specific fish species’ needs and behaviors.

Understanding these aspects helps ensure a balanced and thriving aquarium environment for both plants and fish.

1. Providing Shelter and Hiding Spots:
Aquarium plants and decorations offer shelter and hiding spots for fish, which are essential for their well-being. Many fish species, such as tetras and barbs, benefit from having places to hide when they feel threatened. This shelter reduces stress and encourages natural behaviors by allowing fish to establish territories and find refuge when needed. The Journal of Applied Ichthyology highlighted that fish given ample hiding spots exhibit less aggression and increased breeding success (Hoffmann, 2019).

2. Improving Water Quality and Oxygen Levels:
Plants in an aquarium help improve water quality by absorbing harmful substances like ammonia and nitrates. They also produce oxygen during photosynthesis, contributing to a healthier environment for fish. The presence of live plants can reduce the need for chemical filtration methods, making the aquarium more sustainable. A study by Wang et al. (2020) found that tanks with live aquatic plants maintained better water quality than those with artificial decorations.

3. Offering Natural Foraging Opportunities:
Aquarium plants and decorations provide natural foraging opportunities, mimicking the fish’s native habitats. Species like cichlids and plecos often graze on algae or search for food fragments in plants. This practice encourages natural feeding behaviors and enhances the overall health of the fish. The presence of diverse plant life can also support various microorganisms, which serve as a food source for fish larvae.

4. Enhancing Aesthetic Appeal and Reducing Stress:
Aquarium decorations and plants enhance the visual appeal of the tank. A well-decorated aquarium creates a calming and pleasing environment, reducing stress for both fish and viewers. Stress can lead to health issues in fish, including a compromised immune system, making aesthetic considerations crucial for their well-being. Research indicates that visually appealing environments can improve fish behavior and breeding (Kogut, 2021).

5. Promoting Beneficial Bacteria Growth for Biological Filtration:
Aquarium plants and decorations can serve as surfaces for beneficial bacteria to colonize. These bacteria are essential for the nitrogen cycle, converting toxic ammonia and nitrites into less harmful nitrates. An established biological filtration system leads to healthier water conditions and promotes fish longevity. According to the U.S. Environmental Protection Agency, effective biological filtration is critical for maintaining balanced aquatic ecosystems.

6. Supporting Specific Fish Species’ Needs and Behaviors:
Different fish species have varied needs concerning their environment. For instance, species native to densely planted environments, such as bettas, thrive when provided with ample vegetation. Conversely, species from open waters may prefer more open spaces. An understanding of these species-specific requirements allows aquarists to select appropriate plants and decorations, maximizing compatibility within the aquarium. The book “Aquariumkeeping for Beginners” by Smith and Johnson (2022) stresses that matching tank conditions with the needs of fish species is vital for their success in captivity.

What Are Some Common Mistakes to Avoid When Stocking a 75 Gallon Freshwater Tank?

To ensure a successful setup for a 75-gallon freshwater tank, avoid the following common mistakes:

Overstocking the tank
Skipping the cycling process
Ignoring water parameters
Choosing incompatible fish species
Failing to provide adequate filtration
Neglecting tank maintenance
Using untreated tap water

Understanding these mistakes can lead to healthier fish and a more balanced aquatic environment.

Overstocking the Tank:
Overstocking the tank refers to housing more fish than the tank can accommodate. This results in poor water quality and increased fish stress. The general rule of thumb for stocking is one inch of fish per gallon of water, keeping in mind species’ specific needs. For example, a 75-gallon tank can house about 75 inches of fish, but larger fish like cichlids require more space. Overstocking can lead to fatalities and reduced overall tank health.
Skipping the Cycling Process:
Skipping the cycling process involves adding fish to a new tank without establishing beneficial bacteria. This bacteria is essential for converting harmful ammonia from fish waste into less toxic nitrates. The cycling process can take 4 to 6 weeks and ensures a stable environment. A fishless cycling method using ammonia or bottled bacteria is recommended to avoid the risk of losing fish. According to the New Aquarium Cycle by the Aquarium Science Institute, cycling is crucial for long-term tank success.
Ignoring Water Parameters:
Ignoring water parameters means not regularly testing pH, ammonia, nitrite, and nitrate levels. These factors greatly influence fish health and tank stability. For a 75-gallon tank, maintaining pH between 6.5 and 7.5 is often appropriate. High ammonia or nitrite levels can lead to fish stress and death. Regular testing using aquarium test kits can help identify issues early and adapt to optimal conditions (Tetra, 2020).
Choosing Incompatible Fish Species:
Choosing incompatible fish species refers to mixing fish that might not coexist peacefully. Some species are territorial or aggressive, while others may be shy and stressed by tank mates. Community tanks should consist of peaceful species, like tetras or danios, to promote harmony. A study on fish behavior (Smith, 2021) found that incompatible fish can lead to injuries or fatalities, underscoring the importance of species compatibility.
Failing to Provide Adequate Filtration:
Failing to provide adequate filtration means selecting a filter that does not correspond to the tank’s size and fish load. A good filtration system helps maintain water clarity and quality. For a 75-gallon tank, a filter with a turnover rate of at least 300 gallons per hour is recommended. This helps remove toxins and algae, ensuring a healthier habitat.
Neglecting Tank Maintenance:
Neglecting tank maintenance entails overlooking regular water changes and cleaning routines. Consistent monthly water changes of 10-20% help keep nitrate levels low and water fresh. Aquarium maintenance logs can help track these changes and prevent buildup of harmful contaminants. A well-maintained tank supports fish health and vibrant plant growth.
Using Untreated Tap Water:
Using untreated tap water introduces chemicals like chlorine or chloramines, which can harm fish. It is crucial to treat tap water with a water conditioner before adding it to the tank. Additionally, testing for heavy metals can further ensure fish safety and create a stable environment. Research by FishVet (2021) confirms that untreated water can significantly impact fish wellbeing.

By recognizing and avoiding these common mistakes, you will create a thriving 75-gallon freshwater tank that provides a healthy habitat for your fish.

How Can Overcrowding Compromise Fish Health and Tank Ecology?

Overcrowding in fish tanks compromises fish health and tank ecology by causing stress, impairing water quality, and increasing the risk of disease.

Stress: Overcrowding raises stress levels in fish. Stress often leads to aggressive behavior and decreased immune function. A study by W. E. Smith (2004) found that fish in crowded conditions exhibited increased cortisol levels, which are associated with stress. Elevated stress can cause long-term health issues and even reduce lifespan.

Water Quality: Overcrowding disrupts the balance of tank ecology by increasing waste production. Fish excrete ammonia, which is toxic in high concentrations. According to a report by H. A. Hargreaves (1998), high fish density can cause ammonia levels to soar, leading to toxic conditions. This unhealthy environment can harm gills and degrade overall fish health.

Disease Risk: Crowded tanks facilitate the spread of diseases among fish. Studies show that an increase in fish density correlates with a higher incidence of illnesses. For example, a research article by J. B. G. V. M. T. (2019) indicated that the risk of outbreak for diseases such as ich or fin rot significantly increased in overstocked tanks. Stress and weakened immune systems further contribute to this risk.

Oxygen Depletion: Increased fish density leads to higher oxygen consumption. Fish require oxygen to survive, and overcrowding limits the oxygen available in the water. A study by A. R. Patton (2002) found that as the number of fish in a tank rises, the dissolved oxygen levels may drop below safe thresholds, leading to suffocation.

In summary, overcrowding adversely affects fish health and tank ecology through increased stress levels, poor water quality, greater disease risks, and oxygen depletion. Maintaining appropriate fish stocking levels ensures a healthier aquatic environment.

What Should You Avoid When Selecting Fish for a 75 Gallon Aquarium?

When selecting fish for a 75-gallon aquarium, you should avoid species that are incompatible with each other, overstocking, and purchasing unhealthy fish.

Incompatible species.
Overstocking.
Healthy fish selection.

To ensure a successful aquarium, consider these aspects in detail.

Incompatible Species:
You should avoid selecting incompatible species for your 75-gallon aquarium. Incompatible species can lead to aggression and stress among fish. For instance, cichlids are known for territorial behavior and might fight with other species. Researching the behavioral traits of potential additions helps prevent conflicts.
Overstocking:
Avoid overstocking your aquarium to maintain a healthy environment. Overstocking increases waste levels and depletes oxygen, leading to poor water quality. A general rule is to allow one inch of fish per gallon of water, but this can vary based on species and tank setup. Following this guideline can help maintain balance in your aquarium.
Healthy Fish Selection:
When selecting fish, avoid purchasing unhealthy specimens. Look for clear eyes, vibrant colors, and active swimming behavior. An article by Dr. Eric Johnson in 2021 highlighted the importance of selecting fish from reputable suppliers to reduce the risk of introducing disease into the aquarium. Quarantining new fish before adding them to the main tank is also advisable to monitor for any signs of illness.

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