How many fish can a 55 gal fish tank hold?

Answer 1

Calculating how many fish is often decided by what is called the 1 inch per gallon rule i.e. you could have 55 fish of 1 inch long fully mature. However there are many variables inlcuding filtration, surface area of tank, the species you get and how messy that species is. The best way to decide is to discuss it with a aquarium store owner (not large stores such as pets@home etc as they have terrible knowledge of species and fishkeeping in general.

Answer 2

A general rule of thumb is 1 inch of fish per gallon of water. Therefore, a 55-gallon fish tank could potentially hold up to 55 inches of fish, as long as the fish are compatible and the tank is properly filtered and maintained. It is important to consider factors such as fish size, species, and behavior before determining the appropriate stocking level for a tank.