redfin

[ red-fin ]

/ ˈrɛdˌfɪn /

any of various small freshwater minnows with red fins, especially a shiner, Notropis umbratilis, of streams in central North America.

Origin of redfin

First recorded in 1785–95; red¹ + fin¹

The redfin shiner flourished in all the streams surveyed except the Arkansas and Walnut Rivers.

Fishes of Chautauqua, Cowley and Elk Counties, Kansas |Artie L. Metcalf
After an hour I found this the perching-place of fourteen Redfin tads, and at the very summit was Guinevere.

Edge of the Jungle |William Beebe

redfin

/ (ˈrɛdˌfɪn) /

any of various small cyprinid fishes of the genus Notropis, esp N. cornutus . They have reddish fins and are popular aquarium fishes