Texas cichlids are extremely aggressive fish in a persistant type of way. There temperment is very close to that of the Buttikoferi, they will terrorize there tank mates to death. On the flip side IMO they are one of the most beautiful fresh water fish. Mine was my favorite fish I ever owned. they grow pretty fast also, when I bought mine I purposely got him smaller then my other fish and put him in my 75 with a jack demsey GT and a few other similar fish, once he got equal to there size he started bullying, and quickly grew larger then his mates and turned into a real threat. almost killed my jack and a few others, so I had to put him a 55 buy his self. unfortunately he jumped out and died. but I would suggest a 75 and just keep an eye out for aggression. not trying to discourage by any means just something to lookout for but, if you can, GET ONE!!!!!