ok so far he has done: airipima gigas, piranha, giant amazon catfishes(redtails, piriaibha, etc), flesh eating catfish( candirus, etc), alligator gar, nile perch, wels catfish, goonch catfish, white sturgeon, kamba catfish/vundu catfish, bull shark, mekong giant ray. any i left off. so far for good ones we have: electric eel, Aimara(wolf fish), tiger muskie, flathead & blue catfish. paddlefish and lung fish are still maybes. any other good ones? if he doesn't want to go saltwater what about brackish? keep em comin...