If the pleco is really a common pleco, species is
Hypostomus plecostomus, it gets huge, up to 19 inches, and has a
very significant impact on the bioload. When young it naturally feeds on algae, crustaceans, insects, small worms. As it matures it eats less and less algae. In the aquarium, it accepts most prepared sinking foods; algae/spirulina/kelp foods must be included. Frozen bloodworms, shrimp; live worms, insect larvae, brine shrimp. Vegetable matter such as zucchini, yam, driftwood, cucumber may be offered.
They also need driftwood in their tanks; driftwood is something they feed on and adds to their dietary needs. Caves are also excellent as they like to hide from time to time. Having the tank light on does not hurt its eyes because the common Pleco has a protective eye lid it uses when in bright light called the Omega Iris which protects its eye from bright lights, its ok to have him in ordinary light though. It is a nocturnal feeder which means he prefers to be in the dark when feeding, but he also eats at all times with no problem. Filtration must be sufficient to handle the waste.
This fish will dig throughout the substrate and attempt to bury itself under any objects. All rock work must be secure to prevent tumbling and cracking the aquarium glass.
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