Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Percophidae
(Duckbills) > Hemerocoetinae
Etymology: Dactylopsaron: Greek, daktyleys, -eos = a kind of grey mullet + Greek, psaron = with different colours, grey (Ref. 45335); dimorphicum: Named in reference to the sexual dimorphism observed in this species.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 240 - 345 m (Ref. 41739). Deep-water
Southeast Pacific: western part of the Sala y Gomez Ridge, and at the junction between this ridge and the Nazca Ridge.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.9 cm SL male/unsexed; (Ref. 41739)
Morphology | Morphometrics
(total): 3 - 5;
soft rays: 23 - 25. Sexual dimorphism in the structure of the first dorsal fin, first ray thickened and very long in males, slender and short in females; large head, 2.3-2.6 times in SL (Ref. 41739).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Parin, N.V., 1990. Percophid fishes (Percophidae) from the Sala y Gomez Ridge (Southeast Pacific). J. Ichthyol. 30(1):68-79. (Ref. 41739)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 4.4 - 12.6, mean 10.6 (based on 40 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [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
): 3.2 ±0.3 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 (10 of 100) .