What should I feed my Pleco ?

Plecos are bottom feeders.  In the wild, they feed on plant matter and detritus on the bottom of the river or stream.  They also eat other vegetation.

In a tank or pond setting, you can feed plecos algae wafers.  You can also feed them vegetables like cucumbers, zucchini, cabbage and lettuce.  One problem in giving vegetables is to get the vegetables to sink down to the bottom.  Some vegetables like cucumbers will sink down after a few hours.  Other like cabbages and lettuce will need to be held down by a piece of stone or a vegetable clip.

While plecos eat the algae growth in the aquarium, it is not sufficient.  They need to be fed the food mentioned above.
Baby plecos in the first days will have to be fed infusoria or baby brine shrimp.