Holocephali (chimaeras) > Chimaeriformes
(Chimaeras) > Chimaeridae
(Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: Greek, hydr = water + Greek, lagos = hare (Ref. 45335); bemisi: Named for W.E. Bemisi.
Environment / Climate / Range
Marine; bathydemersal; depth range 400 - 1100 m (Ref. 45044), usually 500 - 700 m (Ref. 45044). Deep-water
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 112 cm TL male/unsexed; (Ref. 45044)
Morphology | Morphometrics
Pale brown coloration fading to white ventrally. Dorsal fin spine reaching to origin of second dorsal fin when depressed; elongated second dorsal fin not indented along its length. Horizontal and hyomandibular lateral line canals sharing a common branch. Caudal filament long and stout (Ref. 45044).
Southwest Pacific: New Zealand.
Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205).
Didier, D.A., 2002. Two new species of chimaeroid fishes from the southwestern Pacific Ocean (Holocephali, Chimaeridae). Ichthyol. Res. 49(4):299-306. (Ref. 45044)
IUCN Red List Status (Ref. 90363)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00184 - 0.00751), b=3.10 (2.92 - 3.28), based on LWR estimates for species & Subfamily-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.8 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Assuming Fec <100).
Vulnerability (Ref. 59153
): High vulnerability (61 of 100) .