the dwarf pike could work for sure but they can be nasty with a large tank plenty of places for territory it should work and i wouldn't get a pair of them
I think I'd want something bigger in there, with such a large tank. Would be tough as a bigger fish might eat the smaller dwarfs and tetras you might want, but maybe some festivums, or a pinktail chalceus, or a group of Anostomus?
