Cá Đuối ngói

Therefore, all materials in our collection were morphologically re-examined. The results revealed that specimens collected from the Persian Gulf and the Gulf of Oman have up to 12 enlarged thorns on the base of the tail, 2 (n = 60) to 3 (n = 29) stinging spines, and the denticle band does not cover the trunk area, which is consistent with all diagnostic characteristics of B. walga. So, the current morphological and molecular (e. g. branch support and genetic distance) evidence support the idea that there is a monophyletic clade and B. walga is the only representative of the genus in the region. Recently, Fernando et al. (2019) reported an unknown taxon that clustered closely to well outside the species. This finding shows that there may be more cryptic species in the genus and more detailed examination should be conducted.