Holocephali (helhuvudsfiskar) (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); deani: In honor of American ichthyologist Bashford Dean (1867‒1928), for his “able studies” of chimaeras (See ETYFish).
Eponymy: Dr Bashford Dean (1857–1928) was an American zoologist, ichthyologist and acknowledged expert on mediaeval armour. [...] (Ref. 128868), visit book page.
More on authors: Smith & Radcliffe.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina djupbottenlevande; djupintervall 469 - 770 m (Ref. 9904). Deep-water
Western Central Pacific: known only from the Philippines.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 67.0 cm TL hane/ej könsbestämd; (Ref. 9904); 73.0 cm TL (female)
Rare and limited to the upper slope. Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205). Biology and utilization unknown in the area (Ref. 9904).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Smith, H.M., 1912. The chimaeroid fishes of the Philippine Islands with description of a new species. Proc. U.S. Natl. Mus. 42(1899):231-232. (Ref. 5283)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (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). |
Trofisk nivå (Ref. 69278) |
3.8 ±0.6 se; based on size and trophs of closest relatives |
Resiliens (Ref. 120179) |
Låg, lägsta populationsfördubblingstid 4,5-14 år (Assuming Fec <100). |
Sårbarhet i fisket (Ref. 59153) |
High vulnerability (57 of 100). 🛈 |