It's been set up since January. Had fish in it since around March. I just noticed it today. I do just my regular weekly changes. Changed filter about a month or so go. Is the only fish that has that blotch.Any chance of a picture that is in focus?
Tell us some information about the tank and fish. eg: how long it's been set up for, how long you've had the fish, how long it's had the spot, if you added anything in the last 2 weeks, water changes, filters, etc
Ok sorry about that picture as you know they won't stay still lol. I have aquarium salt should I use any of it. Thanks.I can't tell anything from the picture (it's blurry).
It's probably just excess mucous over an injured area. Do a big water change and gravel clean the substrate every day for a week and it should heal up fine.
Make sure any new water is free of chlorine/ chloramine before it's added to the tank.