30''x16''x24'' - big enough for Brown/Black Knife?

[stl2pab]

I've got an empty 55 and I was thinking about doin this too. . .. it's months from happening, but I was thinkin 1 african knife, 1 butterfly, a pair of kribs, and maybe a school of congos. Good luck

 

[killerfish]

go for 1 or 3 or more brown knifes 2 most likely won't work we'll when there older i'd try

african brown knife
it is a little small but mabye a senegal bichir
spotted bush fish or ctenopoma would go very we'll
african butterfly fish
mabye a few other fish like congo tetras or something