Northern Tessellated Darter
Etheostoma olmstedi
Northern Tessellated Darter (Etheostoma olmstedi) is a small, non-game freshwater darter common in clear to moderately turbid streams and rivers of eastern North America. It lives near the bottom, feeding on tiny aquatic insects and other invertebrates.
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Identification points
- Two dark, teardrop-shaped blotches behind the head on the side.
- Sides with a strong tessellated, checkered pattern of pale X- and W-shaped marks.
- Slender, bottom-dwelling body with two separate dorsal fins and a pointed snout.
Habitat
Shallow riffles, runs, and stream margins with sand, gravel, cobble, or mixed bottom; often along current breaks, undercut banks, and leaf-litter edges in clear to moderately turbid rivers and creeks.
Bait notes
Rarely targeted as a game fish; if collected for bait or observation, tiny offerings work best: small bits of worm, bloodworm, insect larvae, or micro jigs/sculpin-style flies. It is often caught incidentally on very small lures or bait meant for other minnows.
Behavior
A benthic, day-active feeder that hugs the bottom and picks drifting mayfly, midge, caddisfly, and other small invertebrates from substrate and current. It is usually secretive and can dart quickly into cover when disturbed.
Caution
Handle gently; like many small stream fishes, it is easily stressed and should be returned quickly. Check local regulations before collecting, as some states restrict use of native minnows and darters as bait.
Fishing notes
Fish ultra-light in shallow riffles and current seams with tiny jigs, bead-head nymphs, or small live-bait rigs near the bottom. Slow drifts and short hops are more effective than fast retrieves; a fine-mesh net helps if handling.