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Hydrolagus macrophthalmus de Buen, 1959 Big eye chimaera |
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photo by
Reyes, P. |
| Family: | Chimaeridae (Shortnose chimaeras or ratfishes) | |||
| Max. size: | 63.9 cm TL (male/unsexed); 58.1 cm TL (female) | |||
| Environment: | bathydemersal; marine; depth range 590 - 1160 m | |||
| Distribution: | Eastern Pacific: from the central coast of Mexico, Costa Rica, Peru and Chile. | |||
| Diagnosis: | This species is distinguished by the following set of characters: slender body; short and bluntly rounded snout; relatively short head (HDL 24.2-24.5% BDL); relatively large eyes (EYL 30.9-34.2% HDL); oral and preopercular lateral line canals sharing a short common branch from the infraorbital canal; relatively large pectoral fins (P1A 36.5-40.8% BDL), extending posterior to the insertion of pelvic fins; trunk's lateral line canal without sinusoidal undulations; the anterior and posterior regions of second dorsal fin considerably taller than middle region; no anal fin; tail region elongate and slender (PCA 58.3-59.9% BDL); caudal-fin axis horizontal with the fin nearly symmetrical, epaxial and hypaxial lobes equal sized; coloration uniform brown across entire body, no white markings and bluish fins (Ref. 97389). | |||
| Biology: | Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205). | |||
| IUCN Red List Status: | Least Concern (LC); Date assessed: 02 September 2019 Ref. (130435) | |||
| Threat to humans: | harmless | |||