Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Do Tilapia really control filamentous algae

Yes.

Tilapia are overwhelmingly reported to be very effective at reducing FA in ponds. Reading threads here at the forum, one almost gets the idea that the majority of ponds in Texas now stock Tilapia each year (it's quite likely a majority of the Texas PMs here at the forum do indeed use Tilapia).

Recommended Spring stocking rates for adults run around 5-10 lbs per acre, depending on the severity of the problem and whether or not the pond is fed (pellet-eating Tilapia consuming slightly less FA than fish in unfed ponds).