Klassifizierung / Names
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Perciformes/Percoidei (Perchs) >
Percidae (Perches) > Etheostomatinae
Etymology: Etheostoma: Greek, etheo = to strain + Greek, stoma = mouth; Rafinesque said "various mouths", but Jordan and Evermann suggest the name might have been intended as "Heterostoma (Ref. 45335).
More on authors: Jordan & Gilbert.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
; süßwasser benthopelagisch. Subtropical; 31°N - 29°N
North America: found only in San Marcos and Comal springs and their effluent rivers (Guadalupe River system) in southern central Texas, USA.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 4.3 cm TL Männchen/unbestimmt; (Ref. 5723); common length : 2.9 cm TL Männchen/unbestimmt; (Ref. 12193)
Rückenflossenstacheln (insgesamt) : 6 - 8; Rückenflossenweichstrahlen (insgesamt) : 10 - 13; Afterflossenstacheln: 1; Afterflossenweichstrahlen: 5 - 8; Wirbelzahl: 32 - 33.
Body shape (shape guide): elongated; Cross section: oval.
Occur in vegetated springs, pools and runs of effluent rivers (Ref. 5723). Feed primarily on cladocerans, copepods, amphipods, and aquatic insects (Ref. 54633). Spawn throughout the year (Ref. 75081) at 33-day interval (Ref. 31966). Eggs are found attached to the substrate unguarded (Ref. 7043).
Eggs are found attached to the substrate unguarded (Ref. 7043).
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)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
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Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00303 - 0.01510), b=3.12 (2.94 - 3.30), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophische Ebene (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Fec=760).
Anfälligkeit der Fischerei (Ref.
59153): Low vulnerability (10 of 100).
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