Bathyraja isotrachys

(GÜNTHER, 1877)

Raspback skate
Classification: Elasmobranchii Rajiformes Arhynchobatidae

Reference of the original description
GÜNTHER, A. (1877)
Preliminary notes on new fishes collected in Japan during the expedition of H. M. S. `Challenger.' Annals and Magazine of Natural History, (Series 4), 20 (119): 433–446

Image of the original description
No image in first description.

Synonyms / new combinations and misspellings
Breviraja isotrachys, Breviraja (Bathyraja) isotrachys, Raia isotrachys, Raja isotrachys

Bathyraja isotrachys
Holotype: BMNH: 1887.12.7.3;

Description :

Citation: Bathyraja isotrachys (GÜNTHER, 1877): In: Database of modern sharks, rays and chimaeras,, World Wide Web electronic publication, Version 02/2021

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Bathyraja isotrachys (GÜNTHER, 1877), © Alexei Orlov
Common names
eng Challenger skate, eng Raspback skate

Northwest Pacific: Sea of Okhotsk to southern Japan. Source:

Oviparous, paired eggs are laid. Embryos feed solely on yolk [733]. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother [17086].

Size / Weight / Age
76.2 cm TL (male/unsexed; (Ref. 6797))

demersal; marine; depth range 370 - 2000 m (Ref. 50550)

shark-references Species-ID=516;