Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino; salmastro demersale; distribuzione batimetrica 0 - 2 m (Ref. 96339). Subtropical; 55°N - 22°N, 136°W - 111°W
Eastern Pacific: Rivers Inlet, British Columbia, Canada to Baja California, Mexico.
Size / Peso / Age
Maturity: Lm ?  range ? - 3.4 cm
Max length : 6.4 cm SL maschio/sesso non determinato; (Ref. 27436); common length : 4.2 cm TL maschio/sesso non determinato; (Ref. 12193); Età massima riportata: 3.00 anni (Ref. 72494)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 4 - 5; Raggi dorsali molli (totale) : 15 - 17; Spine anali: 0; Raggi anali molli: 14 - 17. Caudal rounded.
Inhabits sand or mud bottom. Retreats into shrimp burrows when threatened and at low tide (Ref. 6885). Commonly in estuaries, lagoons and tidal sloughs. Reported to occur in freshwater. Adults feeds on diatoms, green algae, tintinnids, eggs and young of their hosts (Ref. 6885). Positions large food particles near crabs to be torn to smaller pieces (Ref. 6885). Preyed upon by Sebastes, staghorn sculpin, whitespot greenling, and terns (Ref. 6885). Unlike other gobies, it does not build a nest or care for its young (Ref. 2850).
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. (Ref. 2850)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Pesca: commerciale; Acquario: Acquari pubblici
Strumenti
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 9.4 - 18.5, mean 10.8 °C (based on 189 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00442 - 0.02163), b=3.05 (2.86 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.42 se; based on food items.
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (tm=1; tmax=2.5).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).