Commons and a multitude of other Plecs are very badly overrated as algae eaters, when they get beyond 4-6" they start to eat less and less algae and need alot more solid veggies. As sub-adults and mature adults algae composes almost none of their actual diet, they'd much rather have some nice zuccinni.SquirrelOsO said:out of all the "suckers" out there i think the common pl*co does the best job at cleaning algae. keep in mind they grow pretty large, but at a slow rate so one has plenty of time to upgrade to a bigger tank
They have even been known to attack other fish in their hunger.
Please read this thread,
http://www.aquariacentral.com/forums/showthread.php?t=46284
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