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); mirabilis: Latin for wonderful or strange, allusion not explained, possibly referring to its large eyes and/or typically strange chimaeroid appearance (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range 450 - 1933 m (Ref. 112530), usually 800 - ? m (Ref. 112530). Deep-water; 67°N - 29°S, 98°W - 17°E
Eastern Atlantic: southern coast of Iceland, Faeroe Islands to northern Spain; off Western Sahara, Senegal, and Namibia. Probably more widely distributed in deep water. Western Atlantic: off the Guianas (Ref. 13608).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 38.0 cm SL male/unsexed; (Ref. 4443); 41.0 cm SL (female)
Moderately common on continental slopes. Feeds on small fishes and invertebrates. Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Krefft, G., 1990. Chimaeridae. p. 111-113. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4443)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Fisheries: commercial
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00331 (0.00137 - 0.00798), b=3.07 (2.87 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
3.9 ±0.58 se; based on food items. |
Resilience (Ref. 120179) |
Low, minimum population doubling time 4.5 - 14 years (Assuming Fec <100). |
Fishing Vulnerability (Ref. 59153) |
Moderate to high vulnerability (50 of 100). 🛈 |
Climate Vulnerability (Ref. 125649) |
Low vulnerability (5 of 100). 🛈 |
Price category (Ref. 80766) |
High.
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Nutrients (Ref. 124155) |
Calcium = 19.4 [4.9, 65.6] mg/100g; Iron = 0.455 [0.157, 1.126] mg/100g; Protein = 15.9 [10.2, 18.9] %; Omega3 = 0.354 [0.130, 1.011] g/100g; Selenium = 15.5 [4.8, 53.4] μg/100g; VitaminA = 10.5 [2.1, 47.0] μg/100g; Zinc = 0.367 [0.190, 0.726] mg/100g (wet weight); |