台灣四種鱧科魚類的檢索與一隻腹鰭變異的線鱧

A Key to the Species of the Genus Channa (Channidae: Teleostei) of Taiwan with Description of a Ventral Fin Abnormal Specimen of Channa striata (Bloch, 1793)

我們詳細的檢視目前保存在國立自然科學博物館（NMNS）及農委會特有生物研究保育中心（ESRI）的鱧科鱧屬Channa （Channidae: Teleostei）魚類標本，並提出台灣現生4種鱧科鱧屬魚類檢索表以供參考。根據標本，台灣現生的4種鱧屬魚類分別爲Channa asiatica （Linnaeus, 1758）、Channa maculata （Lacepede, 1802）、Channa striata （Bloch, 1793）及Channa micropeltes （Cuvier, 1831）。其中1 隻採集於花蓮縣，目前保存於特生中心，外部缺乏腹鰭的標本（HABF-00545, 179mmSL），經重新檢視後判定是腹鰭缺陷且背鰭鰭條數變異的C. striata，並非早先被鑑定的C. asiatica。

We examined the specimens of the snakeheads belonging to the genus Channa (Channidae: Teleostei) deposited at the National Museum of Natural Science (NMNS) and Endemic Species Research Institute (ESRI). Four species were identified. They were Channa asiatica (Linnaeus, 1758), Channa maculata (Lacepede, 1802), Channa striata (Bloch, 1793) and Channa micropeltes (Cuvier, 1831), representing all currently known snakehead fishes in Taiwan, Also, we found a snakehead specimen (standard length, 179 mm) collected from Hualien in the ESRI collections (HABF-00545), whose taxonomic status was uncertain but it is more closely resemble to C. striata that has pelvic fins than C. asiatica that has no pelvic fins. This paper briefly describes this abnormal specimen, compared it with the known species, and presents a key to the species of the genus Channa of Taiwan for further investigation.