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The genus Abbottina Jordan lips thick, relatively smooth, with small less-developed papillae or shallow grooves; lower lip with anterior fold, medial pad forming two oval protuberances; jaws covered by lips, without horny margin; barbel one pair; the last unbranched dorsal-fin ray thin and soft; with five branched anal-fin rays; pharyngeal teeth in one row; air-bladder moderately large, possessing two soft chambers; anterior chamber enclosed in membrane capsule. Based on morphological characters and phylogeny of mitochondrial genome sequences, Abbottina lalinensis has been reassigned to the genus Microphysogobio . Further, based on the morphology of Abbottina binhi from Cao Bàng Province, this species is reassigned to the genus Oriengobio . Thus, the genus Abbottina becomes a monotypic genus.
Sun et al. (Tue,) studied this question.