I have kept a lot more too, species from south of the cape don’t really need a chiller at all as long as your room is air conditioned in summer and not overheated in winter. Scup Black Sea Bass Tautog Naked Gobies Oyster Toadfish, all make great tank pets as small juveniles. The Naked Goby can be kept in a pico or nano since they won’t get larger than 1.5 inches. For fish up North of Cape, juvenile winter flounder are the best!!! What an awesome fish that takes well to captivity. Feed mysis and they excel. Grubby Sculpins from nearshore harbors and estuaries are great too. An eel trap is all you would need to collect most of those fish.