I couldn't get a picture of it but I found this on google and it's the same as what's on mine.Ed204 said:Hello there,
Do you have any pictures of the fish, that would definitely help in finding out what’s the problem.
My gravel is smooth and my pleco is still a juvenile so I don't think there are any crevices too small for him and I only see him on the driftwood in the tank.Feohw said:If you read the thread that pic came from it says that it could have damaged itself on decor. Is there anything in your tank with tight spaces/crevices that it could have scraped its fins on? It also says that it could have been the gravel, but I have mine on gravel and its perfectly fine - though sharper gravels could maybe cause an issue and my gravel is much smaller than in that picture.
It wouldn't hurt either to know the water parameters of your tank.