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Percina tanasi Etnier, 1976

Snail darter
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drawing shows typical species in Percidae.

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> Perciformes/Percoidei (Perchs) > Percidae (Perches) > Etheostomatinae
Etymology: Percina: Latin, diminutive of perch = perch (Ref. 45335);  tanasi: Named after the former capital of the Cherokee Nation, which was located on the Little Tennessee River, the type locality (Ref. 10294).

Environment: milieu / climate zone / depth range / distribution range Ecologie

; zoet water benthopelagisch. Temperate; 36°N - 34°N

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North America: upper Tennessee River drainage of eastern Tennessee and northern Georgia in the USA.

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 9.0 cm TL mannelijk / geslacht onbekend; (Ref. 5723); max. gerapporteerde leeftijd: 4 Jaren (Ref. 12193)

Biologie     Verklarende woordenlijst (bv. epibenthic)

Occurs in gravel and sand runs of medium-sized rivers (Ref. 5723, 10294); also found in creeks (Ref. 10294). Feeds on small pleurocerid river snails, mostly Leptoxis and Lithasia, as well as some physid snails and limpets; also consumes caddisfly larvae (Glossosoma, Hydropsyche, Brachycentrus), midge and blackfly larvae, and a few mayfly nymphs (Ref. 10294).

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Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

Status op de Rode Lijst van het IUCN (Ref. 130435)

  Kwetsbaar, zie IUCN Rode Lijst (VU) (B1ab(iii)); Date assessed: 25 April 2012

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00235 - 0.01227), b=3.14 (2.94 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.4   ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (tmax=4; Fec=100-600).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).