Novices in the aquarium hobby have a tendency to buy too many fish. With a wide variety of attractive fish at the pet store, it’s easy to forget the size of the tank they are going into. In addition, some beginners don’t know how to determine the number of fish that can be safely put into an aquarium.
Beginners don’t always know when is the right time to add fish to a new aquarium. Too many novices fill up an aquarium with water and run out to buy fish. The fresh, clean water from a tap may be good for humans but it is bad for fish.
How Many Fish are Safe in one Aquarium?
Some people say it’s one inch of fish per gallon and others say one inch of fish to every three gallons of water. To be safe, one inch per gallon is the maximum allowable limit. Overcrowding a tank can cause health and growth problems in the fish plus it can ruin the water.