Sorry for being so interested in in literally all these fish and asking all sorts of questions on them. But I recently came across wimple piranha, though I couldn’t find much info on them, and I couldn’t really find out if they need to be kept in schools, but apparently they only get about 6”, so if they needed to be in schools, it probably wouldn’t be too much trouble to have multiple, at least not too much bio load, they could be super aggressive I don’t know lol
Raphael catfish are so pretty! How large do the get and do the need to be in schools?
Dang it looks like everyone beat me to this lol.
Wimpels are rare and expensive. But yes they do need schools. If you like piranhas a solo of the smallest Serras or a solo red belly would be great. They are nasty and beautiful. Exodon tetras are pretty cool too, only 3-5 inches but after just like piranhas. You can keep dozens in that size tank.
Red wolf is pretty inactive, but very fun at feedings. Gold wolf is too active.
Raphaels get 6-9 inches and can be solo. They hide very well though and chances are you will never see it.
Peacock eels are very fun, they learn to recognize you eventually too!
Senegal bichir is very good for that tank.
Puffers are also very fun and rewarding to keep.
Prehistoric monster fish may fit what you are looking for, I know next to nothing about them except that they bury themselves.
Freshwater frog fish is a relative to anglerfish, so big and scary.
If you went saltwater or brackish there are a number of good options too (morays, lionfish, etc.)
Invisible
I have my bichirs with my African Brown knifes in a 75g with some other oddballs so maybe one captive bred senegal with maybe 3 brown knife would work.as for the wolf In my opinion a bichir and any wolf species together in a 55g tank is asking for trouble so if you want a wolf in a 55 I would go red wolf solo.
