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Issue: Vol. 5301 No. 1: 8 Jun. 2023
Type: Article
Published: 2023-06-08
DOI: 10.11646/zootaxa.5301.1.7
Page range: 137-150
Abstract views: 639
PDF downloaded: 23

A new Coelorinchus from the western Indian Ocean with comments on the C. tokiensis group of species (Teleostei: Gadiformes: Macrouridae)

Severtsov Institute of Ecology and Evolution; Russian Academy of Sciences; Leninskii prospect 33; Moscow 119071; Russia
Department of ichthyology; California Academy of Sciences; 55 Music Concourse Drive; San Francisco CA 94118 U.S.A.
Pisces Taxonomy morphology deep-sea benthic fish Indo-Pacific

Abstract

A new species, Coelorinchus zinjianus sp. nov., is described from the western Indian Ocean off Madagascar. In many respects, the new species is similar to C. quadricristatus but differs from that species in details of scale spinulation, mouth coloration (pale vs. dark), size of external light organ, and some other proportions. Together with C. flabellispinis and C. trunovi, these species form the flabellispinis species group, which is restricted to the northern and western Indian Ocean and is similar in most respects to the West-Pacific tokiensis group, but differs in the size and shape of the terminal snout scute (long and pointed, diamond-shaped vs. small and blunt) and apparently attaining a smaller adult size (< 45–55 cm TL vs. > 80–90 cm TL, depending on the species).

 

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