Actinopteri (ray-finned fishes) > Stomiiformes
(Lightfishes and dragonfishes) > Sternoptychidae
(Marine hatchetfishes) > Sternoptychinae
Etymology: Polyipnus: Greek, poly = a lot of + Greek, ipnos = lanterns; surugaensis: Named for its type locality, Suruga Bay, Japan..
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-oceanic. Temperate
Northwest Pacific: known only from Suruga Bay, Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.7 cm SL male/unsexed; (Ref. 26382)
Morphology | Morphometrics
soft rays: 17;
Vertebrae: 32. First and second supra-abdominal photophores at the same level, with the third elevated. Darkly pigmented area of predorsal do not reach the median line of the body and is separated from the subdorsal dark area; the anterior part of the darkly pigmented predorsal is concave ventrally. Vomerine teeth present only on lateral edge (Ref. 37378).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Harold, A.S., 1994. A taxonomic revision of the sternoptychid genus Polyipnus (Teleostei: Stomiiformes) with an analysis of phylogenetic relationships. Bull. Mar. Sci. 54(2):428-534. (Ref. 26382)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02291 (0.00994 - 0.05280), b=2.97 (2.76 - 3.18), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 3.1 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .