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Chimaera opalescens  Luchetti, Iglésias & Sellos, 2011

Opal chimaera
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Chimaera opalescens   AquaMaps   Data sources: GBIF OBIS
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Image of Chimaera opalescens (Opal chimaera)
Chimaera opalescens
Picture by Iglesias, S.P.

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

Holocephali (chimaeras) > Chimaeriformes (Chimaeras) > Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Chimaera: Latin, chimaera = marine monster, 1634 (Ref. 45335);  opalescens: Name from the Latin opalus (opal), refers to the characteristic iridescent colouration of the fresh specimens, resembling the nacreous colours of the semi-precious stone opal.

Environment / Climate / Range Ecology

Marine; bathydemersal; depth range 900 - 1400 m (Ref. 87424).   Temperate, preferred ?; 57°N - 48°N, 6°W - 11°W

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

Northeast Atlantic, along the slope to the west of the British Isles and France (Ref. 87424).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 96.8 cm TL male/unsexed; (Ref. 87424); 109.8 cm TL (female)

Short description Morphology | Morphometrics

Chimaera opalescens can be distinguished from its congeners by the following combination of characters: body evenly coloured, iridescent, varying from beige to tan in adults and bronzish in juveniles; unpaired fins brown to purple, uniformly coloured or with pale or whitish edges; iris black; claspers tripartite divided for one third of their length, not extending beyond the pelvic fins in adults; dorsal spine equal or shorter than first dorsal fin; ventral caudal lobe equal or deeper than the dorsal caudal lobe. Comparison of DNA sequences of the CO1 gene with those of related species supported C. opalescens as a distinct species (Ref. 87424).

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator | Collaborators

Luchetti, E.A., S.P. Iglésias and D.Y. Sellos, 2011. Chimaera opalescens n. sp., a new chimaeroid (Chondrichthyes: Holocephali) from the north-eastern Atlantic Ocean. J. Fish Biol. 79(2):399-417. (Ref. 87424)

IUCN Red List Status (Ref. 109396)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




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FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Scirus | 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 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00128 - 0.00745), b=3.10 (2.89 - 3.31), based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.7   ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  High vulnerability (59 of 100) .