mine is in a 10 gallon selection of the 55, and sits in his woodcave with a 7" synodontis eurpterus. the foot long carapo at the store was $20, but I gave the store a 5" lace synodontis so know hes down to $12. the one at the store has no caves and the lfs strinsgs long shop lits over several 20 gallons, so the tank is bright. he stays behind the ugf tube all day. I plan to clear out a 40 tall, and move my 7 inch carapo to it, then get the 12 inch carapo, put him in his own section filled with plants and caves to let it calm down, then move it to the cichlid 55. You think a carapo would be alright with a 2" JD, 2.5" red devil, 9-10" king kong blood parrot, 5" bicher and a pleco?
oh, I think I am also going to take the other 55, stalk it with plants, and put scools of centipede and glass knives in it.