Dictionary of Ichthyology  

cover net = an often conical, accessory, hand net with a circular, rigid-framed mouth used to trap fishes caught in larger nets or a fish shelter.

From Umali, A. F. 1950. Guide to the classification of fishing gear in the Philippines. Research Report 17, Fish and Wildlife Service, U.S. Department of the Interior, Washington.

Canadian Museum of Nature
www.briancoad.com