Holocephali (chimaeras) > Chimaeriformes
(Chimaeras) > Chimaeridae
(Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: Greek, hydr = water + Greek, lagos = hare (Ref. 45335). More on author: Whitley.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 146 - 510 m (Ref. 9904), usually - m (Ref. ). Subtropical; 0°C - ; 11°S - 41°S
Indo-West Pacific: Australia.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 50 - ? cm
Max length : 88.0 cm TL male/unsexed; (Ref. 58048)
Occurs in the outer continental shelf and upper slope. Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205). Caught with bottom trawls but not utilized at present although its meat is of high quality (Ref. 9904) but of low value (Ref.58048).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: of potential interest
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 12 - 21.1, mean 16 °C (based on 63 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00118 - 0.00673), b=3.10 (2.89 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.8 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Assuming Fec <100).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (51 of 100) .