i have a common pleco ( or at least i think) he/she is about 6 inchs long and just a great fish. but i recently noticed little bumps all over his/her mouth, but no where else on his body. i read on a website that the males have bumps on their mouths, but i wnated to make sure. i'd post a pic but i cnat figure out how

any help would be great, thanks.
-pooky