Around his gill area? Pics are next to impossible, you cant see them unless he yawns. It looks extremely sharp and serrated all over like thorns. About 4-8 thorns per gill side. Maybe a few more or less. I have grown very attached to this plecostamus and want to make sure this is nothing to be concerned about.
Sent from my SAMSUNG-SGH-I727 using MonsterAquariaNetwork App
Sent from my SAMSUNG-SGH-I727 using MonsterAquariaNetwork App