55g

[SaltSolutions1]

If I have a 55 gallon tank, can I do an aggressive tank or a predator tank?

From the posts on here it looks like everyone has a 75g + tank

 

[DJCubsFan]

from the research i have done, you can do a couple smaller fish. Like dwarf lionfish and some smaller eels

 

[reefman8471]

55g

You could also do an anglerfish or hawkfish.

James