How Many Fish In A 20 Gallon Saltwater Aquarium. You can have up to 10 inches of fish for a 20 gallon but the fish must be compatable with each other the coral rocks anemonome etc you have and the temp. During my research for small fish I stuck to the commonly accepted rule that a nano aquarium may be any tank that has a volume capacity of between 5 and 30 US gallons of water.
You can definitely run a 20 gallon saltwater tank although it will be more difficult than a larger tank. 1 snail per gallon 1 crab per 4 gallons However these rules do not mean you. How many fish in a 5 gallon tank How many fish in a 10 gallon tank How many fish in a 20 gallon tank How many fish in a 50 gallon tank.
For this reason I made sure to keep the record of nano fish that remain under 35 inches of full body length.
A 50-gallon tank can by this rule of thumb accommodate 15 inches of fish while a 20-gallon tank can safely hold only about six inches of fish. Care Level Easy. Firefish or Gramma are always good. You can definitely run a 20 gallon saltwater tank although it will be more difficult than a larger tank.
