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Holocephali (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); compacta:Latin for stocky or stubby, referring to its “stubby body, short tail and massive head” (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range Ecology
Marine; bathydemersal; depth range 595 - 655 m (Ref. 123898). Deep-water
Southern Indian Ocean: off Amsterdam I. (Ref. 123898). Possibly in the Southern Ocean (NB303).
Size / Weight / Age
Maturity: Lm? range ? - ? cm Max length : 84.3 cm TL (female)
Short description Identification keys | Morphology | Morphometrics
This species is distinguished from its congeners by the following set of characters: massive head with a short snout; trunk stocky and relatively long 44% BDL, short tail with second dorsal fin base 72% BDL; pelvic fin long, its anterior margin 26% BDL; caudal fin dorsal origin slightly posterior to caudal fin ventral origin; skin firm, non-deciduous; preopercular and oral lateral line canals sharing a common branch; specifc CO1 and NADH2 sequences. Colouration: brown color with yellow blotches on body both on both fresh and preserved specimen (Ref. 123898). Cross section: compressed.
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Iglésias, S.P., J.M. Kemper and G.J.P. Naylor, 2022. Chimaera compacta, a new species from southern Indian Ocean, and an estimate of phylogenetic relationships within the genus Chimaera (Chondrichthyes: Chimaeridae). Ichthyol. Res. 69(1):31-45. (Ref. 123898)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
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 (2.87 - 3.27), 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
Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Deep-water species with few large eggs.).
Fishing Vulnerability (Ref. 59153): High vulnerability (59 of 100). 🛈
