Bloodfin darter

Bloodfin darter
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Percidae
Genus: Nothonotus
Species: N. sanguifluus
Binomial name
Nothonotus sanguifluus
(Cope, 1870)
Synonyms
  • Poecilichthys sanguifluus Cope, 1870
  • Etheostoma sanguifluum (Cope, 1870)

The bloodfin darter (Nothonotus sanguifluus) is a species of darter endemic to the southeastern United States.[2]

Geographic distribution

The bloodfin darter occupies small to medium streams on the Cumberland Plateau in and around the Big South Fork. The range of the species is small and patchy and the effects of human expansion are not fully known at this time. Currently, the bloodfin darter occurs in the same streams and river that is has historically. Human expansion may pose a problem for this species, but the effects are not yet known.

Ecology

The bloodfin darter is an invertivore (feeds on invertebrates) in both the adult and juvenile forms[3] and prefers high gradient, medium river, moderate gradient, riffle.[3] The bloodfin darter prefers high to moderate gradient streams that are in the higher elevations of the Cumberland Plateau. The bloodfin dater also needs rocky/gravel bottoms to spawn where the eggs are deposited in between crevices in the rocks.

Life history

The bloodfin darter reaches a maximum length of 9.0 centimeters (3.5 in)[4] and the species breeds in rocky shoals. The bloodfin darter lays eggs in or under rocks that are near fast moving water or riffles of small to medium rivers and streams. The bloodfin darter breeds once per year in the spring. The species lays 20 eggs per mating event and eggs were clumped together; larvae were phototactic and pelagic for 5–21 days before becoming benthic.[5] Fish that are phototactic move towards the light and fish that are pelagic are in open water. Fish that are benthic inhabit the bottom portions of the water column in the habitat that species is in.

Management

Somewhat small extent of occurrence, but listed as Least Concern in view of the fairly large number of subpopulations, lack of evidence of a substantial decline, and apparent lack of major threats.[1]

References

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