Etheostoma thalassinum
| Family | Scientific Name | Author | Year | Common Name |
| Percidae | Etheostoma thalassinum | (Jordan and Brayton) | 1878 | Seagreen Darter |
Unique Characteristics: Belly and interpelvic area lacking modified scales. Lateral line normal, not arched upward. 1st anal spine stiff, as thick as 2nd spine. Sides with no horizontal streaks along each scale row. Posterior bars on side not encircling caudal peduncle. Opercle and checks naked. Nape with embedded scales near head. Dorsal fin with distal orange band and no basal orange band. Dark dorsal saddles 6 or 7; males with sides of body without horizontal lines formed by red dots. Restricted to the Broad and Catawba basins.
Similar Species: None
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