A new record of the long moray, Gymnothorax longinquus (Actinopterygii: Anguilliformes: Muraenidae), from southern Vietnam, supporting the uncertain record in the Gulf of Thailand

Abstract

Five specimens of Gymnothorax longinquus (Whitley, 1948) were collected from a fish market and a fish landing site in Tac Cau and Ha Tien, southern Vietnam. These specimens represent the first record of G. longinquus in Vietnam, and further support a previously uncertain record in Thailand. The specimens collected are described and illustrated. Gymnothorax longinquus may prefer muddy shallow water from northern Australia to the Gulf of Thailand.

Assessing phenovariant species pairs of moray eels: Hybridization, introgression, and morphology

“…G. griseus vs. G. thyrsoideus , and G. margaritophorus vs. G. pharaonis ), species with similar morphology to the target species, and the target species outside of our sampling regions. Most obtained sequences were traceable to taxonomic papers and our previous works (Huang et al, 2019, 2020, 2021; Sithole et al, 2020; Smith et al, 2019) or with available images for confirming species identification. Sequences that were not able to confirm their species identifications were marked with quotation marks.…”

Gymnothorax poikilospilus, a new moray eel (Teleostei: Anguilliformes: Muraenidae) from Penghu Islands, western Taiwan

“…Gymnothorax poikilospilus can be easily distinguished from other three similar species of Gymnothorax by having more outer maxillary teeth (18-20 vs. 10-18 in G. cinerascens, 9-16 in G. hepaticus, and 11-16 in G. longinquus), more outer dentary teeth (27-31 vs. 12-22, 12-21, and 18-22), and more total vertebrae (141 vs. 128-135, 128-132, and 128-134) (Smith et al 2019;Huang et al 2020). It can also be simply separated from the three Indo-Pacific jaw-arched brown morays (viz.…”