Actinopterigi (pesci con pinne raggiate)
(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
; marino demersale; distribuzione batimetrica 0 - 76 m (Ref. 2850). Subtropical; 18°C - 22°C (Ref. 27115)
Eastern Pacific: Gulf of California to Ecuador and north of Perú.
Size / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.4 cm TL maschio/sesso non determinato; (Ref. 2850)
Found usually in open rocky areas but retreats to crevices or holes or hides among spines of sea urchins when threatened. Territorial. Sits on exposed rock surfaces near a hole or crevice. Feeds mainly on small crustaceans. Oviparous (Ref. 56079). Males guard the eggs which are found attached to the walls of brood chamber (Ref. 56079). Female deposits oblong eggs in empty shells; male guards them. Often found with Lythrypnus zebra.
Oviparous, demersal spawner (Ref. 101194). Both male and female spawn with many individuals in small contiguous territories (Ref. 240). Males guard the eggs which are found attached to the walls of brood chamber (Ref. 56079). Simultaneous hermaphrodite with varying allocation of reproductive tissue to male and female function (Ref. 31569). Bi-directional sex change has been confirmed for this species (Ref. 103751).
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. 120744)
CITES (Ref. 118484)
Threat to humans
BibliografiaAcquacolturaProfilo di acquacolturaVarietàGeneticaFrequenze allelicheEreditarietàMalattieElaborazioneMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 15.8 - 25.9, mean 21.2 (based on 54 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00461 - 0.01502), b=3.06 (2.90 - 3.22), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.33 se; Based on food items.
Resilienza (Ref. 120179
): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (12 of 100) .