Percina copelandi
| Channel darter | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Percidae |
| Subfamily: | Etheostomatinae |
| Genus: | Percina |
| Species: | P. copelandi |
| Binomial name | |
|
Percina copelandi (Jordan, 1877) |
|
The channel darter (Percina copelandi) is a species of fish in the perch family, Percidae, and the subfamily Etheostomatinae. It is native to North America where it typically occurs in the sandy or gravelly shallows of lakes and in small and medium-sized rivers in riffles over sand, gravel or rock bottoms. It is a small fish ranging from 34 to 72 mm (1.3 to 2.8 in) in length, olive brown with darker speckles and sometimes with a dark spot below the eye and dark blotches along the flank. It feeds mostly on insect larvae and other small invertebrates and breeds in small streams. This species is listed as threatened by the Canadian Species at Risk Act (SARA) but overall it has a wide range and numerous sub-populations and the International Union for Conservation of Nature has rated it as a "least concern species".
This is a small-sized fish between 34 and 61 mm in total length; some specimens as large as 72 mm. It is light sand or olive in colour with brown speckles on its back. A dark spot or bar may be present below the eye and extending onto the snout 8 to 18 brown oblong blotches along the lateral line linked by a thin brown line. The spawning male turns dusky with a blackish head. The fins are clear or lightly speckled and the first spiny dorsal fin usually has 11 rays.
The channel darter most resembles the river darter (Percina shumardi). It can be distinguished from the johnny darter (Etheostoma nigrum) and the tessellated darter (E. olmstedi), which have only one anal spine instead of two. It differs from the blackside darter (P. maculata) in usually having 11 rays on the first spiny dorsal fin instead of 13 to 14.
The fish is native to North America, where it has a highly localized distribution. It is uncommon in Canada but disjunct populations can be found in Ontario and Quebec. In Ontario, it is found in Little Rideau Creek, in tributaries of the Bay of Quinte, and in Lakes Erie and St. Clair. Along the Huron-Erie corridor, it has been collected from the St. Clair and Detroit Rivers. In Quebec, it occurs in some tributaries of the St. Lawrence and Ottawa Rivers. In the United States, the channel darter is more common, occurring in the Ohio and lower Mississippi basins.
...
Wikipedia