It dosen't sound normal to me. If mine are over fed there bellys will be swollen, but a lump on the side of it's head sounds like a tumor or maybe an infection. You might want to check out this link or reasearch some of the catfish specific websites.
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it is part of the catfish do not worry it will be fine. Maybe your over feeding if bnot nothing is wrong i own a fish place for 23 years
It dosen't sound normal to me. If mine are over fed there bellys will be swollen, but a lump on the side of it's head sounds like a tumor or maybe an infection. You might want to check out this link or reasearch some of the catfish specific websites.
well don't worry about it is just normal for catfish