my red devil has a hole with what looks like a zit in it is this hole in head.
Welcome to Fishlore. Sorry under these conditions.
It looks like hexamita, a known cause of HITH. Hex can be difficult to treat and is often fatal. Try to find a food that contains Metronidazole as this drug often works to stop this disease.
Good luck treating it!
thanks for the replay . I ordered meds for him. hope it works wife's favored fish.
Separate names with a comma.