Ok so I went with my mom to my Uncel apartment he rented out. we went to clean It and there I saw I'n a small tank was a rather large Convict cichilid fish! I think he is bigger then my hand! they left him there soo I brought him home and washed out one of my bigger tanks an put him in it. he is a real smart fish. when ever someone walks by he watches you and wants your attention. or he just wants to eat me Idk.. But I was wondering what kind of fish could I put in the tank with him. the tank looks kinda empty with just him in there. I think its a boy tho I could be wrong. Also is there any thing I could put in there that would make him more happy? he likes to play with the rocks at the bottom of the tank. like he grabs them in his mouth and brings them up to the top and lets them float back down and chases them. he also likes playing with plastic bottle caps. he is so cute! >.<;