Life History Study Of The River Redhorse, Moxostoma Carinatum (Cope), In The Cahaba River, Alabama, With Notes On The Management Of The Species As A Sport Fish

Severe reduction in number of river redhorse, Moxostoma carinatum (Cope), has occurred in Alabama and the southeast during recent years. The Cahaba River is one of the last strongholds for this species in Alabama. Electrical shocking equipment was utilized during this study. Two hundred eighty-six adult river redhorse were captured, tagged, and returned to the Cahaba River. Redhorse were observed spawning on gravel shoals during April, 1966 and April, 1967 with water temperatures ranging from nOF. to 76° F. Egg counts made on river redhorse ranging in size from 17.9 inches to 22.1 inches total length revealed a range from 6,078 to 23,085 eggs per individual, respectively. Pond-reared river redhorse exhibited slower growth than those in natural habitats. River redhorse fed heavily on the Asiatic clam, Corbicula 8pp. Present utilization of the river redhorse as a sport fish is light.

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