OpalineAqua
Fish Fanatic
well, i guess i'll chuck my two cents in
spotted climbing perch are pretty sweet, but they get pretty big, so you could only get the one... two tops
Ropefish, you cooould have in a 30 gallon, but like shroob said, they do prefer to live in groups.
maybe something like an eel would be more to your likes (and ability to keep) a tiretrack eel is pretty sweet, and is surprisingly common
a crocodile fish, maybe... I'd get one myself but the requirements i find are a little high (very picky with their water and food)
piranha are also a possibility... maybe only one or two red bellies, but i'm not a big expert on them... since i don't like them personally...
or, you could go with what i would get, a bichir
a senegal bichir is probably one of the best you can get... easy to care for, gets nice and big (which i like!) but the only problem is, you could probably only keep it in there alone
so depending on what you want (quantity or quality) you may need to start looking at not only preds, but maybe something else... there's many cool fish out there, just depends on what you want
Not a tyre track they grow bigger than the tank. Potential size of 1metre!!!
If u do like eels ive heard of one called a zebra spiny eel that only grows to seven inches.