Okay so don’t do puffers and bichirs ?. A big red tail giant gourami would be amazing. There’s also clown loaches, water cow goby, and if you give me a minute I can come up with a list of 10 cool oddballs you’d probably likeFire eels are cool, certainly wouldn't mind having one as it'd be a great change of bodyshape in the tank. Not a fan of lungfish and don't want to get the Pbass due to their eventual enormous girth (main reason why even if I went the 500 gallon route, I'd be hesitant to get a giant gourami despite how bad I want one). Puffers and bichirs is a big no-no to me, i know puffers eat crustaceans but I know a guy who in one tank alone lost 5 bichirs to a Mbu puffer biting their heads off, and he gave it plenty of crustaceans.