Günther) is an increasingly important marine flatfish with significant potential for aquaculture China. We documented skeletal development and deformities in tank-reared larvae. The specimens were double stained with alcian blue and alizarin red. We identified 14 types of skeletal malformations, including vertebral body fusion, hyperplasia, local hypertrophy, detached haemal and neural spines, bifurcated haemal and neural spines, and a bifurcated caudal fin. These skeletal malformations were most common during the post-metamorphosis stage (day 25, 31.8% of specimens) and later during metamorphosis (day 40, 25% of specimens). Malformations were most common in the PH (prehaemal region), HE (haemal region), and CA (caudal region) of the vertebral column, but were absent in the CE (cephalic region). Our results provide insight into the developmental process and optimization of rearing conditions for .