Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Gobionellinae
Etymology: Gillichthys: Theodore Nicolas Gill (1837-1914) researcher of abyssal fishes and systematics + Greek, ichthys = fish (Ref. 45335).
Environment / Climate / Range
Marine; brackish; demersal; depth range 4 - ? m (Ref. 96339). Subtropical, preferred ?; 42°N - 20°N, 125°W - 106°W
Eastern Pacific: California, northern to central Gulf of California.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 21.0 cm TL male/unsexed; (Ref. 2850); common length : 13.0 cm TL male/unsexed; (Ref. 12193); max. reported age: 2 years (Ref. 56049)
Inhabits tidal flats, bays and coastal sloughs. Prefers mud bottom in shallow water. Non-emerging air-breather (Ref. 31184). Oviparous (Ref. 56079). Males guard the eggs which are found attached to the walls of brood chamber (Ref. 56079).
Female lays several thousand club-shaped eggs in nest built by male. Male guards eggs during 10-12 day incubation.
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 336 p. (Ref. 2850)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00538 - 0.02341), b=3.11 (2.93 - 3.29), based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.35 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (tmax=2;).
Vulnerability (Ref. 59153
): Low vulnerability (11 of 100) .