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Article
Published: 2022-09-23

Four new species of the frogmouth genus Chaunax (Lophiiformes: Chaunacidae) from Taiwan and the Philippines

National Museum of Marine Biology and Aquarium, Pingtung, Taiwan 2Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan 3Department and Graduate Institute of Aquaculture, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan 4Institute of Marine Biology, National Taiwan Ocean University, Keelung, Taiwan 5Australian Museum, Sydney, Australia (Research Associate)
Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
Pisces Biodiversity systematics taxonomy anglerfish deep-sea fish

Abstract

Four new species of the genus Chaunax found in Taiwan and the Philippines are described. Chaunax albatrossae sp. nov. belongs to the C. abei species group and is distinct from its congeners in having a dark gray mouth cavity, a dark brown to black gill chamber and gill rakers and skin covered with only short, simple spinules. Three new species belong to the C. fimbriatus species group: Chaunax erythraeus sp. nov. is distinct in having a uniformly pinkish-red body and an entirely black gill chamber; Chaunax obscurus sp. nov. is distinct in having a dark gray mouth cavity and orange-red marbling on the dorsal surface that fades after fixation; and Chaunax viridiretis sp. nov. is distinguished by its green reticulate pattern with some small, bright-white patches on the dorsal surface. The diagnostic characters used to identify the chaunacids are summarized and a key to all Chaunax species found in Taiwan and adjacent waters is provided.

 

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