Johnny Darter Etheostoma nigrum
This species was found at 684 bioassessment sites, 127 rapid fish bioassessment sites, 127 fisheries assessment sites, and 28 fisheries presence-only assessment sites. In total, it was collected at 880 distinct sites, or 59.7% of the 1473 total sites monitored by the bioassessment program. It is the 4th most commonly collected species.
The Johnny Darter was collected in 1435 bioassessment sampling sessions and 337 fisheries assessment sessions. It was present in 127 rapid bioassessment sessions and 32 presence-only sessions.
The biological assessment program has collected a total of 53,900 individual Johnny Darter specimens, ranking it the #9 most collected fish.
A small member of the darters, reaching a maximum of about 2 1/2-inches long. It is olive in color with numerous, conspicuous w-shaped markings along the sides. The dorsal fin has 12 rays, the anal has 8 rays; there are usually about 50 scales along the lateral line, and the breast and cheeks are scaleless.
HUC12 watersheds where this species has been found