Rhinochimaera africana, Paddlenose chimaera

Rhinochimaera africana Compagno, Stehmann & Ebert, 1990

Paddlenose chimaera
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Rhinochimaera africana   AquaMaps   Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Holocephali (chimaeras) > Chimaeriformes (Chimaeras) > Rhinochimaeridae (Longnose chimaeras)
Etymology: Rhinochimaera: A chimaera with rhinos (Gr.), nose, referring to long, pointed proboscis of R. pacifica (See ETYFish); africana: ana- (L.), belonging to: named for both its distribution around southern Africa and for the Sea Fisheries Research Institute research vessel Africana, from which holotype was collected (See ETYFish).

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

Marine; bathydemersal; depth range 549 - 1450 m (Ref. 11228). Deep-water

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

Southeast Atlantic: southern Africa and Mozambique Channel. Pacific Ocean: Japan (off Hokkaido and northern Honshu) to the east China Sea, including Taiwan; Costa Rica and Peru.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 81.8 cm TL male/unsexed; (Ref. 97389)

Short description Identification keys | Morphology | Morphometrics

This species is distinguished by the following characters: elongate body with an elongate, broad and paddle-shaped pointed snout extending anterior to head (SNL 47.7% HDL), tapering to a slender tail; the junction of supraorbital and infraorbital canals on ventral side of snout is closer to the tip of the snout than to the nasal canal; ONC/TIO is greater than 1.4 (ONC/TIO= 1.64); TIO/SWF is less than 1.5 (TIO/SWF= 1.47); TIO/LNC is less than 3.0 (TIO/LNC= 2.75); tooth-plates are nearly smooth; eyes are relatively small (EYL 6.4% BDL), distinctly behind level of mouth; the first and second dorsal fins are separated by a relatively long interdorsal space (IDS 23.6% BDL) and not connected by a web of skin; caudal-fin axis weakly raised with the fin asymmetrical, the epaxial caudal-fin lobe narrower than hypaxial lobe; dorsal caudal tubercles 25; caudal filament vestigial; coloration uniformly dark brown across entire body, except the oronasal region which is abruptly paler than the body (Ref. 97389).
Body shape (shape guide): elongated; Cross section: angular.

Biology     Glossary (e.g. epibenthic)

Rare (Ref. 11228). Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205).

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

Oviparous (Ref. 205).

Main reference Upload your references | References | Coordinator | Collaborators

Heemstra, P.C., 1995. Additions and corrections for the 1995 impression. p. v-xv. In M.M. Smith and P.C. Heemstra (eds.) Revised Edition of Smiths' Sea Fishes. Springer-Verlag, Berlin. (Ref. 11228)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))

  Least Concern (LC) ; Date assessed: 04 May 2024

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

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Internet sources

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

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.6270 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00195 (0.00084 - 0.00451), b=3.15 (2.95 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level
(Ref. 69278) 		3.8   ±0.5 se; based on size and trophs of closest relatives
Resilience
(Ref. 120179) 		Low, minimum population doubling time 4.5 - 14 years (Assuming Fec <100).
Fishing Vulnerability
(Ref. 59153) 		Moderate to high vulnerability (51 of 100). 🛈