How about a nice [FONT=Arial, Helvetica]Lake Tanganyika setup ?? There are over 150 known species to choose from and probably more. Most are reasonably small, and would look really nice in a Lake specific setup . My personal favorites from this lake are the Shell dwellers, but the Juli's also have some very attractive fish.[/FONT][FONT=Arial, Helvetica][/FONT][FONT=Arial, Helvetica][/FONT]
A 20 gallon is too small for any mbuna (including labidochromis). With a 20 gallon, if you really want a nice, healthy tank with lots of interesting behavior to watch, I reccomend checking out the tanganyikan shell dwelling species such as lamprologus occellatus. They are great looking and wonderful to watch. A very interesting African cichlid.
I agree with the above posts. Species from lake Tanganyika; Shellies, Julies/lelupi or an established birchardi pair would do well in a 20g. I guess some apistos would do well too, but I have no experience with those.
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