Yes, freshwater fish do pee. They release a lot of urine to get rid of excess water they take in from their surroundings. Their kidneys filter waste, creating urine with ammonia and urea. This process helps balance water levels and supports aquatic ecosystems by recycling nutrients within the water. Fish urine also contributes to aquatic … Read more

Freshwater fish do not need to drink large amounts of water. Their bodies have higher salt content than their environment, so they absorb water through their skin and gills using osmosis. They also take in some water while eating. Excess water is expelled through urination, helping them maintain their internal balance. Additionally, these fish have … Read more

Freshwater fish usually do not need added salt. Most fish species live in low-salt water and use their kidneys for osmoregulation. However, species like livebearers can benefit from aquarium salt for immune support and health. Use salt carefully to avoid harming sensitive fish and affecting water chemistry. The proper application of salt involves gradual introduction … Read more

Freshwater fish need oxygen to survive. Ideal dissolved oxygen (DO) levels are between 6-8 mg/L. Fish absorb oxygen from the water, supporting their metabolic processes. Low DO can harm fish. A good filtration system helps maintain oxygen saturation. Use a dechlorinator to protect aquatic plants and ensure a healthy aquarium environment. Aeration plays a critical … Read more

Freshwater fish like trout and carp contain omega-3 fatty acids that support heart health and brain function. However, marine fish such as salmon offer higher amounts of omega-3s. The American Heart Association recommends eating two servings of fatty fish each week to fully enjoy the health benefits of omega-3s. However, some freshwater fish may contain … Read more

Freshwater fish do not need constant light. They thrive with a daily light and dark cycle that mimics their natural environment. A 12-hour light period followed by 12 hours of darkness is best. This routine supports fish health, prevents algae growth, and respects their natural behavior. Use a timer to maintain this lighting schedule. Most … Read more

Freshwater fish do not need light for survival, unlike plants. However, a proper light schedule can improve their behavior. Aim for 12-16 hours of light and 8-12 hours of darkness. Ambient light from a window can work if there are no live plants. Ensure your fish have enough darkness for rest and health. Aquarium lighting … Read more

Freshwater fish usually do not need an air pump. It depends on tank volume and water conditions. Good filters help with surface agitation, ensuring adequate oxygen levels. Keep dissolved oxygen above 5 ppm. An air pump is helpful if oxygen levels drop or if water movement is low, but it is not always necessary. Additionally, … Read more

Freshwater fish need dissolved oxygen to survive. Air bubbles from an air pump boost surface agitation, which helps gas exchange. Air pumps improve oxygen levels, particularly when filters do not create enough water movement. Maintaining proper oxygen levels supports fish metabolic needs and overall aquarium care. An aquarium should have a balanced ecosystem. Fish, plants, … Read more

Freshwater fish may need aerators if oxygen levels are low. A good aquarium filtration system helps maintain oxygen for fish health. Watch for signs like fish gasping at the surface. Aerators and airstones can improve oxygen levels but always ensure a balance with beneficial bacteria and water quality for the best environment. The importance of … Read more