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Article
Published: 2022-09-23

A new wriggler of Eleotrid (Teleostei: Xenisthmidae) from Taiwan

Institute of Marine Biology, and Center for Excellence of the Oceans, National Taiwan Ocean University, Keelung, 20224, Taiwan, ROC
1Institute of Marine Biology, and Center for Excellence of the Oceans, National Taiwan Ocean University, Keelung, 20224, Taiwan, ROC
2Marine Ecology and Conservation Research Center, National Academy of Marine Research, Kaohsiung, 80661, Taiwan, ROC
2Marine Ecology and Conservation Research Center, National Academy of Marine Research, Kaohsiung, 80661, Taiwan, ROC. Department of Oceanography, and Institute of Marine Ecology and Conservation, National Sun Yat-sen University, Kaohsiung, 80420, Taiwan, ROC. Institute of Marine Biology, National Dong Hwa University; National Museum of Marine Biology and Aquarium, Pingtung, 94440, Taiwan, ROC
Pisces Xenisthmus new species marine sleeper fish fauna Taiwan

Abstract

A new wriggler of genus Xenisthmus was collected from Taitung and Pingtung Counties, Taiwan, while using SCUBA diving of coral reef fish survey. The new species, Xenisthmus nigrolateralis, can be well distinguished from other congeners by the following unique combination of features: (1) fins: second dorsal fin rays I/13; anal fin rays I/13; pectoral fin rays16; (2) squamation: longitudinal scale series 68-70; perdorsal scales 23; (3) vertebral count 10+16=26; (4) preopercular canal present with rather more, 5 pores γ1, γ, δ, ε, and ε1 and (5) specific colouration: lateral side with broad, deep brown stripe from rear of lateral gill opening to caudal fin base, and caudal fin with median blackish brown mark, and upper and lower regions translucent, the base with a vertical black bar. The comparison of other congeners would be also discussed in this paper.

 

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