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Speckled Dace

Rhinichthys osculus

Speckled Dace is a small western North American minnow with many local forms. It lives in clear, shallow streams and spring-fed waters, where it forages on tiny aquatic insects and algae.

Freshwater
Speckled Dace reference image
Barrett Paul, U.S. Fish and Wildlife Service, public-domain, via Wikimedia Commons. Source: Wikimedia Commons.

Identification points

  • Small, slender minnow with a narrow, pointed snout and terminal mouth
  • Speckled dark spotting along the back and upper sides
  • Dark lateral stripe and a black wedge on the lower caudal peduncle at the tail base

Habitat

Clear, cool to warm shallow streams, spring runs, riffles, and rocky margins; also common in pools with gravel, cobble, and submerged cover in desert and mountain waters.

Bait notes

Usually not targeted intentionally; tiny hooks with worms, insect larvae, or dough bait can take them. Small nymphs, midge imitations, and micro-jigs under a float work best when fishing specifically for small cyprinids.

Behavior

A tight-schooling, bottom-oriented minnow that grazes algae and picks aquatic insects, detritus, and small crustaceans from rocks and gravel. It stays near current seams and cover, and moves into quieter water at low flow.

Caution

No major species-specific consumption hazard is well established, but it is a very small fish and usually not eaten. Check local rules before collecting or using as bait; some populations are localized and management-sensitive.

Fishing notes

Use ultralight tackle, 6X–8X tippet or very light line, and present baits or flies dead-drift near the bottom in shallow riffles and seam edges. Best approached by sight-fishing in clear water; often more a bait bucket species than a game fish.