Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico; pH range: 6.8 - 7.8; dH range: 8 - 18. Temperate; 10°C - 24°C (Ref. 12468); 41°N - 29°N
North America: Mississippi River basin from Ohio and West Virginia to eastern Illinois and south to Louisiana in the USA; Gulf drainages from Black Warrior River in Alabama to Guadalupe River in Texas, USA.
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm ?, range 5 - ? cm
Max length : 13.0 cm TL maschio/sesso non determinato; (Ref. 5723); common length : 7.5 cm TL maschio/sesso non determinato; (Ref. 12193); Età massima riportata: 4 anni (Ref. 12193)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Inhabit fast gravel runs, sometimes riffles, of creeks and small to medium rivers. Often found near brush (Ref. 5723, 10294). Young are found in shallower gravel riffles (Ref. 7043). Juveniles feed on midge and blackfly larvae; adults consume caddisfly and mayfly larvae (Ref. 10294). Males are larger and darker in color during breeding (Ref. 69400).
While in captivity, males exhibit tail-beating while infront of a large female aside from color changes as prespawning behavior (Ref. 69400). 'The generalized condition of a midventral row of specialized scales suggests that the male mounts the female and aligns his body with hers during fertilization and deposition of the eggs' (Ref. 69400).
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00575 (0.00268 - 0.01234), b=3.13 (2.95 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.2 ±0.40 se; based on food items.
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (tmax=4; tm=1; Fec=80-196).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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