Greenfin Shiner

Greenfin Shiner Cyprinella chloristia (Jordan & Brayton, 1878)

Max Size: 7.5 cm TL (about 3 inches)

A robust, silvery Carolina endemic named for the flash of green that breeding males carry. The body is deep and sturdy for a shiner, with a dark lateral stripe that strengthens toward the tail and fades forward. Most of the year the fins are pale, but in the spawning season males develop bright lime-green dorsal and caudal fins—the “green sails” that give the species its name (chloristia comes from Greek for “green sail”). Like other Cyprinella, it shows a dark blotch on the last few membranes of the dorsal fin. The mouth is terminal to slightly subterminal, and the anal fin has eight rays (a useful field mark versus some look-alikes).

Origin & Habitat Endemic to the southeastern United States. It occurs in the Santee River drainage of North Carolina and South Carolina and the Pee Dee River drainage of South Carolina, mainly in montane and upper Piedmont streams above the Fall Line. Preferred habitat is clear, moderate-flow creeks and small to medium rivers—rocky and sandy pools and runs with clean substrate.

Diet Omnivorous, as is typical for the genus. It takes aquatic insects, small invertebrates, algae, and detritus. Specific gut studies for this species are limited, but its trophic level sits around 3.1 based on size and related shiners.

Behavior & Temperament An active, schooling minnow of clear streams. It occupies the lower to mid water column and is most often seen in groups over sand and rock. Not aggressive, but lively enough to hold its own in a community of similar-sized natives.

Reproduction A crevice spawner, like other Cyprinella. Breeding males develop the characteristic green fins plus nuptial tubercles. Adhesive eggs are deposited in cracks among rocks, logs, or other instream structure. Spawning runs mainly in spring into early summer; multiple spawns are possible in a season.

Conservation Status IUCN: Least Concern (LC). Population size appears large and relatively stable across its restricted range. Like most Piedmont stream fishes, it is sensitive to sedimentation, habitat fragmentation, and water-quality declines, but it currently faces no elevated threat ranking.

A compact Piedmont shiner whose males hoist lime-green sails in the clear rocky runs of the Santee and Pee Dee—one of the Carolinas’ own flash of color.