Actinopteri (ray-finned fishes) > Ovalentaria/misc
(Various families in series Ovalentaria) > Opistognathidae
Etymology: Lonchopisthus: Greek, logche = lance + Greek, opisthe = behind (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 10 - 40 m (Ref. 55763), usually - m (Ref. ). Tropical; 0°C -
Eastern Central Pacific: Gulf of California.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm TL male/unsexed; (Ref. 11482); common length : 20.0 cm TL male/unsexed; (Ref. 55763)
Morphology | Morphometrics
soft rays: 17 - 18. Body somewhat elongated, narrowing posteriorly; head and mouth large; caudal fin lanceolate and much longer than total length of head; head and body cinnamon or cream with diffuse bluish spots. Operculum with an intense blue spot; median fins violet (Ref. 55763).
Most specimens taken from flat sandy bottoms. Feeds on benthic and planktonic invertebrates.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R. and D.R. Robertson, 1994. Fishes of the tropical eastern Pacific. University of Hawaii Press, Honolulu. 332 p. (Ref. 11482)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 21.7 - 28.2, mean 25.6 °C (based on 28 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.41 se; based on food items.
Vulnerability (Ref. 59153
): Low vulnerability (16 of 100) .