Silver Dollar Fish for Biological Control of Submersed Aquatic Weeds
- 1 January 1967
- Vol. 15 (1) , 27-+
- https://doi.org/10.2307/4041061
Abstract
Two fish from South America (Metynnis rooseyelti Eigenmann and Mylossoma argenteum E. Ah].), Doth called silver dollar fish, grazed rapidly on several species of submersed aquatic weeds. Horned pondweed (Zannichellia palustris L.), American pondweed (Potamogeton nodosus Poir.), and sago pondweed (Potamoeeton pectinatus L.) were most palatable to the fish. Richardson pondweed (Potamogeton richardsonii (Ar. Benn.) Rydb.), curly leaf pondweed (Potamogeton crispus L.). and American elodea (Elodea canadensis Michx.) also were grazed. The fish readily grazed on shoots of all sizes except those of mature plants. The Mylossoma grazed the plants more rapidly than the Metynnis. When water temperatures were above 70 F, the fish became more active in their feeding habits.This publication has 1 reference indexed in Scilit: