I just noticed it. This morning it was ok but now (I just changed the water, a 20% change) I was looking at him and I noticed a small rip along the top of his tail. It's not bleeding or anything and it's the only one. It goes about half an inch into his tail. I don't see anything in his tank that could have cut it. I'm gonna take out his fake flowers though just in case. Anyway, other than that, is there anything I can do to help his fin grow back together. I don't want it getting any worse. Please, any help would be great. I know it's not a major major thing just yet but if it stresses him any it could be and I don't want that cause that could be bad. Please, any help would be appreciated. Maybe I'm just the over protective 'parent' that worries too much. But regardless, any suggestions or advice would be appreciated.