Dictionary of Ichthyology  

butterfly net = a net with two wings shaped like those of a butterfly in the form of an oval scoop net. Used on Mexican lakes.

Lake Pátzcuaro (Michocán), Mexico, from Wikimedia Commons: http://en.wikipedia.org/wiki/File:P%C3%A1tzcuaro-Trad-Fishing-3.jpg

İCanadian Museum of Nature
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