Or does he have a fungal infection, as his skin seems like it as matte texture to it. His sides and tail are dark, yet his under belly is perfectly white. I'm not sure whether it is just water parameters that could be a little out or whether I should be treating him for something else...?
I'm new to owning a puffer. Was gifted him as a surprise. Had him for about a month. He seems relatively docile, but eats regularly.
Would love any opinions from experienced puffer parents.
Thanks.