I've heard that these guys are best kept singly because 2+ will fight generally. Does that go for other silver/similar looking fish too? I've got a pinktail chalceus and I'd like to add some bala sharks...will the flagtail be aggressive with them?
Edit: I haven't got the flagtail yet, just looking for input before I get one.
Edit: I haven't got the flagtail yet, just looking for input before I get one.