1.is used refer to any member of a large family
native to Central and South America that posess
sucker shaped mouths that
introduced to aquariums to eat algae.
2. used to refer to a very low, scummy individual, a "bottom feeder".
1.I had a pleco in my 10G tank, but he outgrew
2. that guy is a total pleco, he asked my married sister to do it with