A New “Beakless” Halfbeak of the Genus Nomorhamphus from Sulawesi (Teleostei: Zenarchopteridae)

A new viviparous halfbeak, Nomorhamphus aenigma, new species, from the upper stream of the Cerekang River in central Sulawesi, Indonesia is described. The new species is distinguished from all other zenarchopterids by the complete absence of elongate lower jaws. Although secondary loss of elongate j...

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Bibliographic Details
Published inCopeia Vol. 108; no. 3; pp. 522 - 531
Main Authors Kobayashi, Hirozumi, Masengi, Kawilarang W. A., Yamahira, Kazunori
Format Journal Article
LanguageEnglish
Published Lawrence American Society of Ichthyologists and Herpetologists 22.09.2020
Allen Press Publishing
Subjects
Animal behavior
Elongation
Females
Indonesia
Jaw
Males
Museums
New species
Nomorhamphus
Ontogeny
rivers
Vertebrae
Viviparity
Sulawesi
Indonesia
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Summary:A new viviparous halfbeak, Nomorhamphus aenigma, new species, from the upper stream of the Cerekang River in central Sulawesi, Indonesia is described. The new species is distinguished from all other zenarchopterids by the complete absence of elongate lower jaws. Although secondary loss of elongate jaws is also known from several hemiramphids, N. aenigma, new species, is clearly different from them by having no elongate jaws throughout ontogeny.
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ISSN:0045-8511
2766-1512
1938-5110
2766-1520
DOI:10.1643/CI-19-313