Food Preferences, Food Intake, and Growth of the F1Hybrid of Grass Carp ♀ X Bighead Carp ♂

Abstract
Hybrid carp from the cross C. idella .female. .times. A. nobilis .male. preferred filamentous algae and Najas guadalupensis over Ceratophyllum demersum. Medium-sized (273 g) and large hybrids (360 g) consumed more plant material and grew faster than small hybrids (77 g) at 14.degree. and 22.degree. C in aquaria. It will probably require at least twice as many hybrids as grass carp of the same size to obtain the same level of vegetation control.