Elasmobranchii (sharks and rays) > Squaliformes
(Sleeper and dogfish sharks) > Etmopteridae
Etymology: Etmopterus: Greek, ethmos, -ou = sieve or ethmoides bone + Greek, pteron = wing, fin (Ref. 45335); samadiae: Named for Dr. Sarah Samadi (MNHN)..
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 340 - 785 m (Ref. 116206). Tropical
Western Pacific: Papua New Guinea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 26.5 cm TL male/unsexed; (Ref. 116206); 27.7 cm TL (female)
Morphology | Morphometrics
Vertebrae: 80 - 86. This relatively small, slender, species of linear-denticled Etmopterus can be distinguished from its closest congeners within the E. lucifer clade by the following set of characters: length of its anterior flank markings slightly shorter than its posterior branch; long caudal base marking; irregular and variable number of black, horizontal, dash-like marks on sides of body; differs from E. brachyurus in having a shorter posterior caudal marking (2.8-4.4 vs. 4.2-6.1% TL), longer caudal base marking (10.6-14.1 vs. 7.0-7.8% TL), and flank marking with a slightly shorter posterior branch (9.1-11.2 vs. 11.4-12.6% TL) (Ref. 116206).
The female individual (27.7 cm TL) was found to be pregnant and the 2 males (23 cm and 26.5 cm TL) were determined to be mature (Ref. 116206).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
White, W.T., D.A. Ebert, R.R. Mana and S. Corrigan, 2017. Etmopterus samadiae n. sp., a new lanternshark (Squaliformes: Etmopteridae) from Papua New Guinea. Zootaxa 4244(3):339-354. (Ref. 116206)
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. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00189 - 0.00731), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.0 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Preliminary low fecundity).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (18 of 100).