Paraphyonus rassi

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Paraphyonus rassi (Nielsen, 1975)

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Paraphyonus rassi
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Ophidiiformes (Cusk eels) > Bythitidae (Livebearing brotulas)
Etymology: More on author: Nielsen.

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

Marine; bathydemersal; depth range 2610 - 4440 m (Ref. 105129). Deep-water

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

West and East Central Atlantic: Sargasso Sea and the Caribbean Sea. Pacific Ocean: Australia (Ref, 128809).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 10.3 cm SL male/unsexed; (Ref. 128809); 10.9 cm SL (female)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 75-81; Anal soft rays: 53 - 56; Vertebrae: 68 - 71. This species is distinguished from is congeners by the following characters: first gill arch with 3-4 developed gill rakers; D 75-81; precaudal vertebrae 31-32; anal fin origin below vertebrae 32-36. Colouration: black pigmentation laterally in the roof of the mouth, very distinct from the outside as a black area half the head length between the eye and the upper jaw (Ref. 105129).

Biology     Glossary (e.g. epibenthic)

A rare species (Ref. 34024). Viviparous (Ref. 6527). All four male specimens with developed reproductive organ indicating internal fertilization, and a tentatively referred specimen is a female with distended, 15 mm long ovaries containing large eggs (0.7 mm) (Ref. 105129). A ripe female with eggs (ca. 1 mm diameter), caught in Hunter Commonwealth Marine Reserve, NSW, is the largest known specimen (Ref. 128809).

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

Main reference Upload your references | References | Coordinator | Collaborators

Nielsen, J.G., 2015. Revision of the aphyonid genus Aphyonus (Teleostei: Ophidiiformes) with a new genus and two new species. Zootaxa 4039(2):323-344. (Ref. 105129)

IUCN Red List Status (Ref. 130435)

  Data deficient (DD) ; Date assessed: 08 July 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
FAO - Publication: search | FishSource |

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Spawning aggregation
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
BRUVS
References
Aquaculture
Aquaculture profile
Strains
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Heritability
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Processing
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Mass conversion
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Pictures
Stamps, Coins Misc.
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Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00179 - 0.01169), b=3.10 (2.87 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.4   ±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 (10 of 100).