wet pet for 55 gallon?

I have a Nandus Nandus that I'm growing out in a 30 gallon and he's pretty quirky. they get about 8" max so might fit the bill

"African leaf fish" or the leopard ctenopoma.

Carpintis.

I'd personally opt for a gulper cat (yes they're fine in a 55) or maybe a smaller species of wolf fish.

I would do a gulper cat too, pretty unique fish

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gulper would eat them yes, dont they get 12inch too, some 55's are 12 inch wide!? think you have confused people with the title wet pet which implies a lone pet pal.

nandus nandus are very cool and worth a google, someone else just posted a similar thread i will paste what i advised!-)

could do some rare convicts like hrp or pinks, 5 star general aka hemichromis elongatus or frempongi, red jewel cichlid breeding groups are impressive if you get some really red ones. what about a leopard ctenopoma or nandus nandus both really cool mini predators. erm thats all i can suggest for active fish, obv there are lots of catfish if thats your thing, might get away with a fresh water barracuda they are cool.