Dusky snout catshark

Dusky snout catshark
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	Carcharhiniformes
Family:	Scyliorhinidae
Genus:	Bythaelurus
Species:	B. naylori
Binomial name
	Bythaelurus naylori; Ebert & Clerkin, 2015

The dusky snout catshark (Bythaelurus naylori) is a catshark of the family Scyliorhinidae. This species is found from the Southwest Indian Ridge, southwestern Indian Ocean. The specimens were collected from 89–1,443 m depth in both bottom trawls and midwater trawls. The shallowest catch record of the new species, possibly at 89 m, came from a midwater trawl. This species can be distinguished from its two closest congeners, B. giddingsi and B. lutarius, by a combination of prominent comb-like dermal denticles along the upper caudal-fin margin, absence of oral papillae, uniform body coloration, and noticeable dark dusky snout; Bythaelurus giddingsi has oral papillae present and a variegated color pattern, while B. lutarius lacks a caudal crest of enlarged denticles and matures at a much smaller size than the new species.[1]

References

Ebert, D.A. & Clerkin, P.J. (2015). "A new species of deep-sea catshark (Scyliorhinidae: Bythaelurus) from the southwestern Indian Ocean" (PDF). Journal of the Ocean Science Foundation. 15: 53–63.

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[Ebert2015-1] Ebert, D.A. & Clerkin, P.J. (2015). "A new species of deep-sea catshark (Scyliorhinidae: Bythaelurus) from the southwestern Indian Ocean" (PDF). Journal of the Ocean Science Foundation. 15: 53–63.