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Teleostei (teleosts) > Aulopiformes (Grinners) > Scopelarchidae (Pearleyes)
Etymology: Scopelarchus: Greek, skopelos = a lantern fish + Greek, archos = anus (Ref. 45335); stephensi: Named for John S. Stephen Jr. in recognition of his numerous contributions to the biology of fishes and to the eduction of scientists (Ref. 40783).
Eponymy: Dr John Stewart Stephens Jr (d: 1932) is Professor Emeritus (1993) of Environmental Biology, Occidental College, Los Angeles where he was on the faculty (1959–2003), and Executive Director (1995) of the Vantuna Research Group there, which he founded [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; bathypelagic; depth range 0 - 1000 m (Ref. 58302). Deep-water; 35°N - 25°N

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Northwest Pacific: 27°56.9'-28°07.9'N, 177°53.4'-177°39.2'W (type locality).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 6.2 cm SL male/unsexed; (Ref. 40783)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 8; Anal soft rays: 20 - 22; Vertebrae: 42 - 43. Pigment on pectoral fin limited to a narrow patch of melanophores between 2nd and 6th or 7th pectoral rays on medial third of length of fin; appressed pectoral reaching to pelvic insertion but not to anus; caudal fin depth 7.9-9.2 SL (Ref. 40783).

Meso- and bathypelagic (Ref. 58302).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Johnson, R.K., 1974. Five new species and a new genus of alepisauroid fishes of the Scopelarchidae (Pisces: Myctophiformes). Copeia 1974(2):449-457. (Ref. 40783)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 15 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
Ecology

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Length-weight rel.
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Life cycle
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Genetics
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Estimates based on models

Preferred temperature (Ref. 123201): 1.6 - 22.6, mean 1.7 °C (based on 7 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00347 (0.00143 - 0.00840), b=3.16 (2.94 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.8 ±0.7 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Scopelarchus stephensi Johnson, 1974