Dichichthys albimarginatus (Séret & Last, 2007)
Whitetip bristle shark
photo by Séret, B./Last, P.R.

Family:  Dichichthyidae ()
Max. size:  57.7 cm TL (male/unsexed)
Environment:  bathydemersal; marine; depth range 590 - 732 m
Distribution:  Western Pacific: New Caledonia and possibly Papua New Guinea.
Diagnosis:  This scyliorhinid catshark is characterized by the following: a soft body with velvet-like skin of large tricuspidate denticles; color plain pale to medium brown; posterior margins of the dorsal, caudal and anal-fins are distinctly white-edged; upper and lower anterior caudal fin margins with pronounced caudal crests, the denticles on crests are greatly enlarged; teeth are mainly tricuspidate with greatly elongate median cusps, in 92 rows in both jaws; the first dorsal fin is slightly behind middle of back, the pelvic fins slightly in front of mid-body, prepelvic length 47% TL; vent at mid-length, pre-vent length 50% TL; relatively short snout, prenarial length 3.7% TL; short mouth, length 3.7% TL; short labial furrows, 1.7-2.0% TL, lower furrows subequal in length to upper furrows; head depressed and is shorter than abdomen, length 19.2% TL, pectoral-pelvic length 24.8% TL; second dorsal fin is larger than first, anterior margins of first 8.7% and second dorsal fin 10.4% TL; subterminal caudal lobe relatively small, subterminal margin length 3.3% TL, terminal margin length 3.8% TL; 43 monospondylous centra; 95 precaudal centra, 136 total (Ref. 74543).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 19 June 2017 Ref. (130435)
Threat to humans:  harmless


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