Acheilognathus macromandibularis is a species of freshwater ray-finned fish in the genus Acheilognathus, a bitterling. It is endemic to China. It grows to a maximum length of .Doi, A., R. Arai and H.-Z. Liu, 1999. Acheilognathus macromandibularis, a new bitterling (Cyprinidae) from the lower Changjiang basin, China. Ichthyol. Explor. Freshwat. 10(4):303-308.
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