Freshwater sharks and goldfish do not get along. Goldfish are temperate fish that prefer cooler water (68–70°F). Freshwater sharks, on the other hand, need warmer water (around 77°F) and can be aggressive. Their different temperature needs and behavior make them incompatible as tank mates. In a shared tank, a freshwater shark may see goldfish as … Read more

Freshwater puffer fish puff up to defend against predators. They inflate by taking in water or air, more than doubling their size. This unique adaptation makes them seem too big to eat. Stress often triggers this response. Once they feel safe, they expel the water or air and return to their original size. Caring for … Read more

Freshwater puffer fish do not need salt water. They live in true freshwater. Some species, like pea puffers, can tolerate brackish water. Do not use aquarium salt unless treating diseases. Adding marine salt can harm true freshwater puffers. Focus on their personality and aggression for proper care. Maintaining a clean aquarium is crucial for these … Read more

Freshwater puffer fish can eat assassin snails if the snails are small enough. However, puffers are not dependable for controlling snail populations. They may also struggle to coexist with assassin snails. When choosing tank mates, consider the feeding habits and needs of all species, such as Pea puffers and dwarf puffers, to prevent overpopulation. When … Read more

Freshwater lobsters, or crayfish, are omnivores. They will eat fish when possible. Their diet includes aquatic plants and smaller fish, both live and dead. A proper tank setup is crucial. Crayfish can be aggressive toward fish that are small enough to fit in their mouths. Select compatible fish carefully to avoid conflicts. In a tank … Read more

Ghost shrimp are scavengers that may eat fish fry. They primarily consume leftover food and dead fish. In tanks with limited food, they can also eat baby fish and eggs. If you are breeding fish, monitor their behavior closely to protect the fry and eggs from potential predation. Despite their potential to eat fry, freshwater … Read more

Freshwater frogs, including African Dwarf frogs, eat small fish like guppies if the fish fit in their mouths. They are carnivorous and usually eat worms or shrimp. They have a docile nature but may prey on baby fish. Be cautious when pairing these frogs with larger fish to avoid predation. Frog feeding habits reflect their … Read more

Freshwater fish conserve salts through osmoregulation. They keep a higher internal salt concentration than their environment. Their kidneys efficiently excrete excess water and reabsorb salts. This helps them avoid salt deficiency and maintain homeostasis in low-salinity habitats. Examples of such fish include trout and catfish. To counter this, freshwater fish actively absorb salts through their … Read more

Freshwater fish tanks usually do not require CO2 injection. Most aquatic plants grow well using fish waste for nutrients. While CO2 boosts photosynthesis, a balanced aquarium can thrive with the right plant choices and adequate lighting. Select species that adapt to low CO2 for successful growth and proper aquarium maintenance. Additionally, the presence of healthy … Read more

Yes, freshwater fish tanks with live plants need light for their health. Indirect natural light usually isn’t enough. Use an overhead LED light fixture for the best results. Light supports photosynthesis and plant growth. Aim for 10-14 hours of light each day to ensure both fish and plants thrive. Different types of plants have varying … Read more