Redfin \Red"fin`\ (-f?n`), n. (Zool.)
A small North American dace ({Minnilus cornutus}, or
{Notropis megalops}). The male, in the breeding season, has
bright red fins. Called also {red dace}, and {shiner}.
Applied also to {Notropis ardens}, of the Mississippi valley.
[1913 Webster]