Holocephali (chimaeras) > Chimaeriformes
(Chimaeras) > Chimaeridae
(Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: hydro-, combining form of hydor (Gr.), water; lagos (Gr.), hare, i.e., “water rabbit,” probably referring to three pairs of tooth plates, which tend to protrude from the mouth like a rabbit’s incisors. (See ETYFish); pallidus: Latin for pale, referring to its pallid coloration. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 800 - 2700 m (Ref. 83979). Deep-water
Northeast Atlantic: Iceland.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205). Depth range along the mid-Atlantic ridge (Ref. 83979, C.Cotton pers.comm. 03/10).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Jonsson, G., 1992. Islenskir fiskar. Fiolvi, Reykjavik, 568 pp. (Ref. 12462)
IUCN Red List Status (Ref. 126983)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 3.5 - 6.2, mean 4.2 °C (based on 256 cells).
Phylogenetic diversity index (Ref. 82804
= 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
): 3.9 ±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).
Fishing Vulnerability (Ref. 59153
): Moderate to high vulnerability (55 of 100).
Nutrients (Ref. 124155
): Calcium = 89.7 [16.4, 537.6] mg/100g; Iron = 0.629 [0.172, 2.104] mg/100g; Protein = 14.3 [8.3, 17.7] %; Omega3 = 0.538 [0.147, 2.085] g/100g; Selenium = 5.22 [1.07, 30.11] μg/100g; VitaminA = 207 [22, 1,963] μg/100g; Zinc = 1.37 [0.59, 3.44] mg/100g (wet weight);