Eucyclogobius newberryi
Tidewater Goby
Federal:
Endangered; Proposed Threatened
NS
G3
Collection Details
Specimens
Photos
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Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Perciformes (Perciformes, Also Called the Acanthopteri)
Gobiidae (Gobies)
Eucyclogobius
Eucyclogobius newberryi (Tidewater Goby)
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.)
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Characters
Body shape: elongated.
Distribution
Eastern Pacific: Del Norte County in northern California, USA to Del Mar in southern California.
Habitat Associations
Brackish, marine. demersal. Found in: streams, estuaries.
Biology
Inhabits coastal lagoons and brackish bays at mouth of freshwater streams (Ref. 2850). IS subjected to wide variation in salinity (1-28 ppt.) and temperature (9-25°C) both within and among habitat types. The substrate and vegetation can also differ among lagoon, creek and marsh habitats (Ref. 26474). Feeds mainly on crustaceans, dipteran larvae, gastropods, and invertebrate eggs (Ref. 26474). Oviparous (Ref. 56079). Males construct nesting burrows (Ref. 56079).
Max length: 5.7 cm TL; common length: 4.2 cm TL; max age: 1 years.
Reproductive mode: dioecism; fertilization: external; mating system: monogamy; guarders (nesters); parental care: paternal. Oviparous (Ref. 56079). Eggs are brooded in nesting burrows constructed by males (Ref. 56079).
IUCN Red List Status: Vulnerable (VU), assessed 2024-02-14. Resilience: High (tmax=1).
References
Breder, C.M. and D.E. Rosen (1966) Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p.
Eschmeyer, W.N., E.S. Herald and H. Hammann (1983) A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p.
Swenson, R.O. and A.T. McCray (1996) Feeding ecology of the tidewater goby. Trans. Am. Fish. Soc. 125(6):956-970.
Watson, W. (1996) Gobiidae: gobies. p. 1214-1245. In H.G. Moser (ed.) The early stages of fishes in the California Current Region. California Cooperative Oceanic Fisheries Investigations (CalCOFI) Atlas No. 33. Allen Press, Inc., Lawrence, Kansas. 1505 p.
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