Hysterocarpus traskii
Tule Perch
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Perciformes (Perciformes, Also Called the Acanthopteri)
Embiotocidae (Surfperches)
Hysterocarpus
Hysterocarpus traskii (Tule Perch)
Description
This species account was compiled from
FishBase (Froese, R. and D. Pauly. Editors. 2025. FishBase. World Wide Web electronic publication. www.fishbase.org, version 04/2025.)
and processed using AI-assisted text extraction.
It may contain errors in spelling, punctuation, or formatting.
When citing, please reference the original source rather than this page.
Learn more about our species accounts.
Characters
Body shape: short and / or deep.
Distribution
North America: Clear Lake; Russian, Sacramento-San Joaquin, and Pajaro-Salinas River drainages in California, USA. Three subspecies were recognized: Hysterocarpus traskii lagunae in Clear Lake; Hysterocarpus traskii pomo in Russian River; and Hysterocarpus traskii traskii in rest of range.
Habitat Associations
Freshwater, brackish. demersal. Found in: streams, estuaries.
Biology
Inhabits mud- to gravel-bottomed pools and runs of small to large, low-elevation rivers and lakes. Usually occurs near emergent aquatic plants or overhanging banks. Rarely enters brackish water (Ref. 86798). Viviparous, female carries the developing young (Ref. 205).
Max length: 15.0 cm TL; max age: 5 years.
Reproductive mode: dioecism; fertilization: internal (oviduct); bearers (internal live bearers); parental care: maternal. Viviparous, female carries the developing young (Ref. 205).
IUCN Red List Status: Least Concern (LC), assessed 2012-02-17. Resilience: High (Preliminary K or Fecundity.).
References
Breder, C.M. and D.E. Rosen (1966) Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p.
Turner, J.L. (1966) Distribution of threadfin shad, Dorosoma petenense; tule perch, Hysterocarpus traskii; sculpin spp. and crayfish spp. in the Sacramento-San Joaquin Delta. p. 160-168. In J.L. Turner and D.W. Kelly (comp.) Ecological studies of the Sacramento-San Joaquin Delta. Part II Fishes of the Delta. Fish. Bull. 136.
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.
Comments On Hysterocarpus traskii