A fish may linger near the surface because he’s trying to breathe more easily Remember, fish breathe dissolved oxygen—not oxygen that is already combined in the H2O molecule. Naturally, these dissolved oxygen levels tend to be higher near the surface, where interaction between air and water takes place. What to do if fish are swimming … Read more
Some species of goldfish can live over 20 years , with 30 years being a potential norm for these types of goldfish. In fact, the Guinness Book of world records currently has a 43 year old Goldfish named Tish listed as the oldest goldfish on record. How long does a goldfish live for? Goldfish have … Read more
Popeye disease—medically known as exophthalmia—is a condition where the eye of the fish is swollen and protrudes abnormally from its socket Note that some species of aquarium fish, such as black moor goldfish and telescope-eye goldfish normally have protruding eyes; this is not the same as popeye disease. What are goldfish with big eyes called? … Read more