Studies on morphology and osteology of Parachaenichthys georgianus (Fischer, 1885) (Notothenioidei, Bathydraconidae) from shelf waters off South Georgia (Antarctica)

Body length-dependent variability of the 5 following characteristics, commonly regarded as diagnostic, was studied: head length, maximum body depth, interorbital distance, horizontal eye diameter, and snout length. Ray counts in the dorsal, anal, and pectoral fins were analysed. Skeletal bones were...

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Bibliographic Details
Published in:Acta Ichthyologica et Piscatoria
Main Authors: C. Rojas, A. Kompowski
Format: Article in Journal/Newspaper
Language:English
Published: Pensoft Publishers 1994
Subjects:
Online Access:https://doi.org/10.3750/AIP1994.24.1.06
https://doaj.org/article/84b9dae19d604edeaef50d9be4c190e6
Description
Summary:Body length-dependent variability of the 5 following characteristics, commonly regarded as diagnostic, was studied: head length, maximum body depth, interorbital distance, horizontal eye diameter, and snout length. Ray counts in the dorsal, anal, and pectoral fins were analysed. Skeletal bones were described in detail, based on material from 3 individuals. The data obtained served to extend the species description. Functional and evolutionary importance of variability in the characters studied was analysed.