Xenisthmus

Gill, Anthony C., Bogorodsky, Sergey V. & Mal, Ahmad O., 2017, Review of Red Sea Xenisthmus Snyder (Teleostei: Gobioidei: Xenisthmidae), with description of a new species, Zootaxa 4286 (2), pp. 203-214 : 204

publication ID

https://doi.org/ 10.11646/zootaxa.4286.2.4

publication LSID

lsid:zoobank.org:pub:AFCE4317-AC56-4391-8616-CB1E8FB9EC45

DOI

https://doi.org/10.5281/zenodo.6009359

persistent identifier

https://treatment.plazi.org/id/0382AD3C-FFEE-BD70-FF43-6D18FA3EF8A7

treatment provided by

Plazi

scientific name

Xenisthmus
status

 

Key to species of Xenisthmus View in CoL View at ENA in the Red Sea

1 Tongue rounded to truncate; posterior nostril with well-developed anterior flap; second dorsal-fin rays I,11–12, usually I,11; anal-fin rays I,10–11; ctenoid scales extend anteriorly on midside to below origin of second dorsal fin in specimens larger than about 15 mm SL (ctenoid scales mostly restricted to caudal peduncle in smaller specimens)................ X. polyzonatus

- Tongue indented; posterior nostril with raised rim, but without well-developed anterior flap; second dorsal-fin rays I,13–15; anal-fin rays I,12–14; ctenoid scales restricted to caudal peduncle or absent........................................2

2 Five preopercular pores (pores MNOPQ); second dorsal-fin rays I,13–14, usually I,13; anal-fin rays I,12–13, usually I,12.................................................................................................. X. balius View in CoL

- Three preopercular pores (pores MNO); second dorsal-fin rays I,14–15, usually I,15; anal-fin rays I,13–14................................................................................................ X. oligoporus View in CoL new species

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