Planonasus parini  Weigmann, Stehmann & Thiel, 2013

Dwarf False Catshark
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Planonasus parini
Female picture by Weigmann, S.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Pseudotriakidae (False catsharks)
Etymology: parini: Named for the late Prof. Dr. N.V. Parin, chief scientist of the memorable cruise 17 of RV ‘Vityaz’ in 1988/89, when the holotype was sampled.

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

Marine; bathydemersal; depth range 1000 - 1120 m (Ref. 92921).   Deep-water

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

Northwestern Indian Ocean: off the Socotra Islands, south of Yemen and east of the Horn of Africa.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 53.4 cm TL (female); max. published weight: 560.00 g (Ref. 92921)

Short description Morphology | Morphometrics

This small deep-water pseudotriakid species is distinguished by the following set of characters: soft body; bell-shaped head with a broadly parabolic snout; preorbital snout length 1.5-1.9 times the eye length; preoral length 0.7-0.8 times the mouth width, 1.4-1.5 times the prenarial snout length; eye length 1.9-2.3 times the nostril width; relatively broad head, width at middle gill slits 10-16% of TL; preorbital snout length 1.0-1.7 times the interorbital space (integumental) and 2.1-2.3 (skeletal), respectively; head length 2.0-2.5 times the mouth width, 9.8-10.9 times the nostril width, 2.8-3.3 times the length of preventral caudal-fin margin; length of pectoral-fin anterior margin 2.1-2.2 times the pectoral base length; length of first dorsal-fin inner margin 0.4-0.5 times the pectoral-fin base length; second dorsal-fin base length 13% of TL; color: plain dusky with fins and ventral snout somewhat darker, free rear tip of first dorsal fin marked white; each jaw with about 110-120 rows of very small tri- to multicuspidate teeth; monospondylous trunk vertebrae centra 50-52, diplospondylous precaudal centra 41, total centra about 115-140 (Ref. 92921).

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator | Collaborators

Weigmann, S., M.F.W. Stehmann and R. Thiel, 2013. Planonasus parini n. g. and n. sp., a new genus and species of false cat sharks (Carchariniformes, Pseudotriakidae) from the deep northwestern Indian Ocean off Socotra Islands. Zootaxa 3609(2):163-181. (Ref. 92921)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FishSource |

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Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00138 - 0.00954), b=3.12 (2.89 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.9   ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  .
Vulnerability (Ref. 59153):  Moderate vulnerability (41 of 100) .