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A new grenadier of the genus Hymenocephalus from Tosa Bay, southern Japan (Actinopterygii: Gadiformes: Macrouridae)

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  • Naohide Nakayama
  • Hiromitsu Endo
  • Werner Schwarzhans

Hymenocephalus yamasakiorum, a new species of grenadier fishes, is described from a single specimen collected from Tosa Bay off Aki, Kochi, Japan, at a depth of 320–400 m. The species is distinguished from its 26 known congeners in having the following combination of features: pelvic-fin rays nine; pectoral-fin rays i16–i17; first dorsal-fin rays II, 10; chin barbel 55 % of head length (HL), its tip extending beyond the hind margin of orbit when laid back; snout moderately high, not depressed, length 28 % HL; orbit diameter 33 % HL; interorbital width 24 % HL; gill rakers on first arch (outer/inner) 14/20, on second arch 20/19; pyloric caeca 15; dorsal half of posterior part of tail prominently blackish.

OriginalsprogEngelsk
TidsskriftIchthyological Research
Vol/bind62
Udgave nummer4
Sider (fra-til)504-511
Antal sider8
ISSN1341-8998
DOI
StatusUdgivet - 2015

ID: 154367918