Though lionfish can make beautiful additions to saltwater and reef aquariums, they generally do not make good community fish. ... As long as you are able to provide adequate space, hiding places, and food to your lionfish it will likely thrive under your care in captivity.

Can you keep lionfish in freshwater?

The Freshwater Lionfish needs a brackish water or saltwater environment. It cannot be maintained in freshwater as it will not live for long. They must have a minimum specific gravity of at least 1.005, and up to 1.024.

How big of a tank do you need for a lionfish?

The Volitan Lionfish can grow rapidly to an adult size of 15 inches, and when full grown these fishes should be housed in a 120 gallon or larger aquarium with numerous hiding places. It will hide while acclimating to its new home, but then is generally found out in the open.