Teleostei (teleosts) >
Ophidiiformes (Cusk eels) >
Bythitidae (Livebearing brotulas)
Etymology: Sciadonus: Derived from Greek, skiaina, skion = a fish, red mullet + Greek, onos = hake; longiventralis: Named for its long ventral (= pelvic) fins.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal. Deep-water
Southwest Pacific: Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.0 cm SL male/unsexed; (Ref. 128809)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 87. This species is distinguished from its congeners by the following set of characters: absence of distinct black spots dorsally and along its midbody; D 87; precaudal vertebrae 39; pelvic fin length 3.5 % SL; predorsal length 28.5 % SL (Ref. 128809).
Cross section: compressed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Nielsen, J.G., 2018. Revision of the cosmopolitan deep-sea genus Sciadonus (Teleostei, Bythitidae) with two new species. Cybium 42(2):177-187. (Ref. 118598)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00468 (0.00186 - 0.01174), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
3.3 ±0.5 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 (13 of 100). 🛈 |