well I had already posted in your duplicate thread in the pleco lounge...
Pics are small but looks like a stressed out Hypancistrus sp. L004/5. Sometimes labelled as angelicus pleco. They are given different L numbers depending on where they are from also... L004 & L005 : Brazil: Rio Tocantins at Cametá
L028 : Brazil, Guamá by Ourem
L073 : Brazil, Portel at the Rio Do Pará, Pará