Loaches don't have sharp fins. They do have spines found beneath each eye. Even if the aro tries, both fish lose as the jardini might eventually choke itself to death.Fry;2377400; said:I had a friend who had small clown loaches and a small albino rainbow shark with an 11" jar, they lived together since the beginning - the jar was 2.5". He could tell that the jar was eyeing them. Eventually the jar ate the albino rainbow shark but not the loaches. I think it is because of the loaches' sharp fins so if the jar tried to eat them he might have been hurt himself.