Can a convict live in a 20 gallon tank?

We're talking about a single Convict Cichlid. Cichlids don't swim around aimlessly the way schooling fish do. They are inquisitive and purposeful. I've successfully kept a breeding pair of Convicts in a 15g which has the same footprint.


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For how long? Cons will breed at 2 inches. They will max out between 6 and 8 inches as adults. One adult would be cramped in a 20 tall. Sure it could be done. As many cichlids as I have kept and still keep, I would hardly say they don't swim around aimlessly. I have had convicts that used every inch of a 55 gallon. I have little tiny shellie cichlids that are all over a 29 gallon. If you have a cichlid that does not swim much, then I would say it is sick, or in a tank that is too small.
 
For how long? Cons will breed at 2 inches. They will max out between 6 and 8 inches as adults. One adult would be cramped in a 20 tall. Sure it could be done. As many cichlids as I have kept and still keep, I would hardly say they don't swim around aimlessly. I have had convicts that used every inch of a 55 gallon. I have little tiny shellie cichlids that are all over a 29 gallon. If you have a cichlid that does not swim much, then I would say it is sick, or in a tank that is too small.
Actually males max out at around 6 inches, females at around 4 inches.
 
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