mamapuff;3666330; said:how big is this guy? I was reading about the same topic because my little guy has it too. Search gill curl on here and you will find some threads about it. Depending on how big it is, it may be permanent. What are the water parameters and what size tank is he in? What type of tank mates does he have? What type of filter is running. Lack of oxygen can also play a factor. Mine had it from the beginning when I got him at about 2 inches.
SpeshulEd;3666604; said:When you say he's 4-5 do you mean inches or years?
If he's only 4-5", you should be able to correct the gill curl if its not too bad. Keep the water crystal clear and do big water changes.
If he's 4-5 years old and in 100g, that would be the reason why he has gill curl.