Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Gobiinae
Etymology: Lythrypnus: Greek, lythros, -on = blood + Greek, hypnos = sleep (Ref. 45335). More on author: Gilbert.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 0 - 97 m (Ref. 2850). Subtropical
Eastern Pacific: Carmel Bay in central California, USA to Clarión Island, Mexico.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.7 cm TL male/unsexed; (Ref. 2850); max. reported age: 1.00 years (Ref. 56049)
Found in rocky areas, often in caves and crevices. Occurs from intertidal to 97 m depth. Often collected for home aquarium. Oviparous (Ref. 56079). Males guard the eggs which are found attached to roof of shelter (Ref. 56079).
Oviparous (Ref. 56079). Benthic spawner. Simultaneous hermaphrodite with varying allocation of reproductive tissue to male and female function (Ref. 31569). Males guard the eggs which are found attached to the roof of shelter (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. 123251)
CITES (Ref. 118484)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 13.2 - 26.9, mean 20.2 °C (based on 12 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00271 - 0.01339), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.31 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (tmax=1; tm=0.5).
Vulnerability (Ref. 59153
): Low vulnerability (11 of 100) .