Most plecos will eat meat if offered the chance. Most species offered in the hobby as "common plecos" eat meat. The last two that have gotten big have for me. Once they hit the 16-18" range they become crazed killers.
WyldFya;494437; said:Is it a pink convict or the black con? Back when I had a monster killer plec when he would attack fish (which was very odd to watch) you would wake up in the morning with a fish with 1-3 big round spots on its side. Of course this plec didn't stop with just the slime coat.
I just lost an albino Discus to my common plec on Saturdaymilkman407;494438; said:This thread scares the **** outa me... makes me never wana have a pleco... to bad i have 2 2" royal plecos in my 120gallon with all my prized fishhope he dosent suck off slime coat or hes going into a 10 gallon
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WyldFya;495440; said:That would really suck if a big common got a hold of a stingray.

When they are that small they have a very small need for protein, however when they get bigger they will need protein in their diet, and will search it out.suzydiver;503744;503744 said:I have two sailfin plecos, ranging in size from 4" to 6" and they have never "sucked" on another fish. Keep them occupied by throwing in some blanched zucchini - they love it! Or you can try hanging some fresh spinach in the tank on a clip - they will go to town!