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Holocephali (Chimären, Seekatzen) (chimaeras) > Chimaeriformes (Chimaeras) > Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Chimaera: Named for the mythological creature composed of parts of multiple animals, referring to their odd mix of characteristics (See ETYFish); willwatchi: In honor of the “hard-working” fishers onboard the Sealord Corporation fishing vessel Will Watch, from which holotype was collected (See ETYFish).
Eponymy: Not a true eponym as this is named after a ship’s company – the ‘hard-working’ fishers on board the Sealord Corporation fishing vessel ‘Will Watch’, from which the type was collected. (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ökologie

seewasser bathydemersal; tiefenbereich 89 - 1365 m (Ref. 116312). Tropical; 34°S - 40°S, 41°E - 59°E (Ref. 116312)

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Southwestern Indian Ocean: Southwest Indian Ocean Ridge, northern portion of the Madagascar Ridge, and Walters Shoal.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 83.4 cm TL Männchen/unbestimmt; (Ref. 116312); 97.1 cm TL (female)

This species is collected by midwater and bottom trawls. Maximum length for females is 64.5 cm BDL, 97.1+ cm TL, and for males 51.9 cm BDL, 83.4+ cm TL. The smallest free swimming individual is 11.8 cm BDL, 25.8 cm TL. Females are mature at 51.9 cm BDL, 76.7 cm TL, while males mature at 36.9 cm BDL, 63.8 cm TL (Ref. 116312).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Clerkin, P.J., Ebert, D.A. and J.M. Kemper, 2017. New species of Chimaera (Chondrichthyes: Holocephali: Chimaeriformes: Chimaeridae) from the Southwestern Indian Ocean. Zootaxa 4312(1):1-37. (Ref. 116312)

IUCN Rote Liste Status (Ref. 130435: Version 2024-2)

Daten mangelhaft (DD) ; Date assessed: 02 September 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien:

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00331 (0.00137 - 0.00798), b=3.07 (2.86 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.7 ±0.6 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Deepwater species with few large eggs.).

Fishing Vulnerability (Ref. 59153): High vulnerability (59 of 100).

Chimaera willwatchi Clerkin, Ebert & Kemper, 2017