10 Facts About Longnose dace

Longnose dace is a freshwater minnow native to North America.

Longnose dace eat algae and aquatic insects and are important forage minnows for larger predatory fish.

Longnose dace can be mistaken for suckers because of their subterminal "sucker-like" mouth.

Longnose dace have the widest distribution of any cyprinid in North America, with a range reaching as far south as the Rocky Mountains in northern New Mexico and as far north as the Mackenzie River near the Arctic Circle and across the continent from the Pacific to Atlantic coast.

Longnose dace are benthic and preferentially occupy rock and gravel substrate.

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Longnose dace prefer shallow, fast-moving riffles in streams and rivers and the turbulent, near-shore region of lakes.

Small longnose dace primarily consume algae and benthic invertebrates dace feed on fish scales, fish eggs, terrestrial insects, and aquatic benthic macroinvertebrates, although diet varies seasonally.

Longnose dace reach reproductive maturity at age two and have a mean lifespan of three years.

Longnose dace are polygynandrous and males create and defend territories to attract females to enter and spawn.

Downstream of wastewater effluent from the city of Red Deer longnose dace are larger, increase in abundance, and have larger livers but males have reduced ability to produce testosterone.