Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk. Temperate
North America: Extinct; formerly in USA (Sacramento-San Joaquin River, Clear Lake (Lake Co.), Pajaro River, Salinas River and San Franciso Bay drainages in Califormia).
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 25.0 cm SL hane/ej könsbestämd; (Ref. 12193); common length : 20.0 cm TL hane/ej könsbestämd; (Ref. 12193)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 8 - 9; Mjukstrålar i analfenan: 8 - 9. Caudal peduncle thick and deep. Body deep and compressed with nape high rising steeply from short, pointed head. Lateral line with 49-60 scales. Dorsal and anal fins with 8-9 rays. Pharyngeal teeth 2,5-4,2 (Ref. 86798).
Formerly found in marshes and backwaters along rivers and lake margins. Reported to reach a maximum size of 3.2 cm TL (Ref. 86798).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 2.1 ±0.2 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (21 of 100).