A New Species and a Review of the Deep-Sea Fish Genus Asquamiceps (Salmoniformes: Alepocephalidae)
Abstract:A new species of Asquamiceps with a striking cobalt blue head is described from specimens collected at bathypelagic (ca. 2,000 m) depths in the Atlantic Ocean. The new species is compared to the five nominal species in the genus and a key to Asquamiceps is presented. One nominal species, A. indagatio, is treated as a junior synonym of A. velaris.
The anatomy of A. caeruleus suggests a relatively primitive grade within the family. The caudal skeleton, with two to four ural centra, four uroneurals, and the distal edge of the lower hypurals ahead of the distal edge of the upper hypurals, is one of the most primitive known in the family. Most derived characters found, such as no mesocoracoid, two epurals and no pelvic splint, are reductional. Suspected relationships of Asquamiceps are with Einara, Conocara, Leptoderma, and Aulostomomorpha.
Document Type: Research Article
Publication date: January 1, 1980
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