Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Gobionellinae
Etymology: Ilypnus: Greek, ilyos, -ou = cave + Greek, hypnos = sleep (Ref. 45335). More on authors: Eigenmann & Eigenmann.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal. Subtropical; 39°N -
Eastern Pacific: Tomales Bay in northern California, USA to southern Baja California in Mexico, including the Gulf of California.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.4 cm TL male/unsexed; (Ref. 2850)
Found in mudflats and shallow bays. Oviparous (Ref. 56079). Males guard the eggs which are found attached to the walls of burrows (Ref. 56079).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous (Ref. 56079). Males guard the eggs which are found attached to the walls of burrows (Ref. 56079).
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. 119314)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 12 - 24.2, mean 19.3 (based on 272 cells).
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00319 - 0.02732), b=2.95 (2.71 - 3.19), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (12 of 100) .