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Published: 2022-09-23

Two new species of the snake eel genus Bascanichthys (Anguilliformes: Ophichthidae) from the northwestern Pacific

Kitakyushu Museum of Natural History and Human History, Fukuoka 805-0071, Japan
Oceanic Planning Corporation, Okinawa 901-2102, Japan
Okinawa Environmental Research, Okinawa, 900-0003, Japan
National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan. Australian Museum, Sydney 2010, Australia. Department and Graduate Institute of Aquaculture, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
Pisces Ichthyology Taxonomy Elopomorpha Taiwan Ryukyu Islands estuary


Two new species of the elongate snake eel genus Bascanichthys are described from the northwestern Pacific. Bascanichthys kabeyawan sp. nov. is described based on a single specimen collected from estuary of southern Taiwan. It is characterized by having head 4.6% TL; tail 52.3% TL; body depth at gill opening 1.1% TL; predorsal-fin length 58.4% HL; snout length 10.9% HL; body bicolored, head without bands; lateral-line pores anterior to anus 104; vertebral formula 4-103-224. Bascanichthys ryukyuensis sp. nov. is described based on two specimens collected from the shallow water of Okinawa-jima Island, Ryukyu Islands of southern Japan. It is characterized by having head 3.7–4.3% TL; tail 43.3–44.2% TL; predorsal-fin length 40.7–45.4% HL; snout length 11.3–13.1% HL; body pale brown, head without distinct dark bands after preservation; lateral-line pores anterior to anus 114–118; total vertebrae 207–216, mean vertebral formula 2-116-212; and dorsal-fin origin before middle of head.



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