So my severums tail now looks like someone slit it from the end to the body like 5 or 6 times. have seen this before on fish, but am curious as to why. He was just put into a new tank where he wasnt top dog, not bite marks tho, I am sure you know what I mean. Is this from stress, or fnning out the tail too quickly? Anyway to help the little fella out besides good food and water?