The filetail catshark
, Parmaturus xaniurus
, is a cat shark
of the family Scyliorhinidae
, found from the eastern Pacific
to the Gulf of California
, at depths of between 90 and 1,250 m. Its length is up to 45 cm.
The filetail catshark is found on the outer continental shelf
and upper slope. It feeds on a variety of small fish (e.g. lanternfish
) and invertebrates
. It possesses an enlarged gill
region which is an adaptation to areas with low dissolved oxygen levels. Has a high concentration of squalene
in its liver
which affords it neutral buoyancy. Regularly caught by bottom trawlers but not utilized at all.
Coloration is brownish-black above, lighter below, with all fins dark.
Reproduction is oviparous. The egg-cases have 'T'-shaped lateral flanges and short tendrils.
- Compagno, Dando, & Fowler, Sharks, Collins Gem, HarperCollins, London 2006 ISBN 0-00-721986-5