Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Stephanoberyciformes
(Pricklefishes, bigscales and gibberfishes) > Melamphaidae
(Bigscale fishes or ridgeheads)
Etymology: Poromitra: Greek, poros = porous + Greek, mitra = stripe, belt (Ref. 45335). More on author: Garman.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic. Tropical
Eastern Pacific Ocean, from the central Mexico to central Peru.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 13.4 cm SL male/unsexed; (Ref. 83719)
Morphology | Morphometrics
soft rays: 8 - 10;
Vertebrae: 27 - 28. The species is distinguished by the following: spined posterior and lower margins of the praeoperculum, and in the angular part of the praeoperculum, an unspined notch; insertion of the ventral fins is slightly in front or at the level of the vertical of the posterior margin of the pectoral fin insertion; upper jaw extends to the vertical of the posterior eye margin; soft rays in the dorsal fin 12-13, in anal fin 8-10; first branchial arch with 28-32 rakers; vertebrae 27-28; pyloric caeca 7-8 (Ref. 83719).
Specimens were seined using non-closing fishing gear, the largest depths of capture were 1650-0 m, and the smallest depths were 50-900 m (Ref. 83719).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kotlyar, A.N., 2009. Revision of the genus Poromitra (Melamphaidae): Part 3. Species of P. cristiceps: P. cristiceps, P. nigrofulva, P. frontosa, and P. nigriceps. J. Ichthyol. 49(6):421-434. (Ref. 83719)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00406 - 0.02581), b=3.04 (2.82 - 3.26), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.3 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): High vulnerability (58 of 100) .