My fish has a very small hole in his tail. It's about 1/4 inch in from the end of the tail. It was not there this morning at feed time. About 1 hour later it was there. Could this be from the filter intake? I have seen him occasionally get stuck. (I just bought the Fluval pre-filter sponge today to help with that)
Is there anything I can do to help healing, or will it just get better on its own?
plastic plants with no tankmates
due for 50% water change tomorrow