A New Record of Viviparous Halfbeak, Zenarchopterus dispar (Valenciennes, 1847) from Taiwan, with A Synopsis of This Genus

臺灣產新紀錄種胎生水鱵匙鰭異鰭鱵（Zenarchopterus dispar）及兼記本屬魚類

Yun-Chih Liao(廖運志)

《國立臺灣博物館學刊》 77卷3期 (2024/09) Pp. 1-18

https://doi.org/10.6532/JNTM.202409_77(3).01

摘要

The halfbeaks or viviparous halfbeak are marine and freshwater fishes with modified dorsal fin and anal fin rays in adult male, and are species-specific characters. Before this study, there were two species recorded around Taiwan, e.g., Zenarchopterus buffonis and Z. dunckeri Mohr, 1926. In this paper, species taxonomic account and distribution of the genus Zenarchopterus were documented. One newly recorded species Z. dispar (Valenciennes, 1847) was redescribed and it is common in southwestern Taiwan, and together sympatric distributed with Z. buffonis, these two species are the northernmost distribution globally. Geographic extension northward was observed. However, Z. dunckeri was not seen during the study. A key to the species of Taiwan, synopsis, color photographs, and redescription for Zenarchopterus species are provided.

關鍵字

Actinopterygii ； viviparous halfbeak ； taxonomy ； geographic extension

並列摘要

異鰭鱵屬於海水或淡水魚類，雄性背鰭與臀鰭特化為屬之特徵，也具有種間差異，過去臺灣曾記錄蟾異鰭鱵與董氏異鰭鱵兩種。本報告再檢討異鰭鱵屬之分類及分布，一種常見於臺灣西南部之新紀錄匙鰭異鰭鱵予重新描述，與蟾異鰭鱵共域棲息且皆為全球地理分布之最北紀錄，具有向北擴展現象；董氏異鰭鱵未能再採獲。本報告進行分類檢討，提供臺灣產異鰭鱵之檢索表、彩色標本照並重新加以描述。

並列關鍵字

條鰭魚綱 ； 水鱵 ； 分類學 ； 地理分布擴展

參考文獻

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