hi, cureently, I have no "monster" fish, but In the past I have owned electric catfish, blue crayfish, african butterflys, 5" melanochromis johanni, large synodontis, 4" yoyos, elephant noses, puffers and other exotics. now, for monsters and exotics, and large fish I have a 7" synodontis eurpterus, 2 other 5" synos, a 8-9" male blood parrot a 9" jaguar texas hybrid, a 7" farowella gracelus, 5" silver dollar, 4" mudskipper and so on spread about 4 tanks. If there is anyone around nebraska who knows a place for electric cats let me know. I am also a member of aquariacentral as fish_breeder_05