Hesperoleucus symmetricus, California roach

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Hesperoleucus symmetricus (Baird & Girard, 1854)

California roach
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Hesperoleucus symmetricus
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Cypriniformes (Carps) > Leuciscidae (Minnows) > Laviniinae
Etymology: Hesperoleucus: Greek, hesperos = the land of the west + Greek, leukos = white (Ref. 45335).
More on authors: Baird & Girard.

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

Freshwater; demersal. Temperate; 43°N - 35°N

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

North America: Sacramento-San Joaquin, Russian, Pajaro-Salinas and smaller coastal drainages in California, USA.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 11.0 cm TL male/unsexed; (Ref. 5723); common length : 8.3 cm TL male/unsexed; (Ref. 12193); max. reported age: 5 years (Ref. 72464)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 7-10. Mouth slightly subterminal; body deep, compressed, tapering to narrow caudal peduncle; dorsal-fin origin behind pelvic-fin origin; caudal fin large; scales on lateral line 47-63; dorsal fin with 7-10 rays; pharyngeal teeth 0,5-4,0; dusky gray to steel blue above; dark stripe along side; silver white below; and breeding individuals with red orange-chin, gill cover, and anal and paired-fin bases (Ref. 86798).

Biology     Glossary (e.g. epibenthic)

Inhabits rocky pools of headwaters, creeks and small to medium rivers (Ref. 86798).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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)

  Least Concern (LC) ; Date assessed: 24 February 2012

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

Countries
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Ecosystems
Occurrences
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Ecology
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Common names
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Predators
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Eggs
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Age/Size
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Length-weight
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Internet sources

AFORO (otoliths) | Alien/Invasive Species database | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00455 - 0.02896), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  2.4   ±0.2 se; based on size and trophs of closest relatives
Generation time: 2.0 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (K=0.5).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (24 of 100).