Conclusions
In summary, we constructed the high-quality chromosome-level genome assembly for striped catfish. The phylogenetic position of striped catfish was revealed by our phylogenomic analysis. Through a genome-wide study, we observed the tandem triplication of fabp1 gene on the chromosome 10, which may contribute to the high-fat trait in striped catfish. Comparing the deduced protein sequences of the three fabp1 genes in striped catfish, we proposed the potential functional effects of several mutations (especially the R126T) and predicted the PPAR-selectivity of PPREs. This high-quality genome assembly will be an improved genetic resource for further biomedical studies of striped catfish. It will also be a good reference for genetic improvement of this economically important fish. Moreover, the detailed investigations on fabp1 genes in striped catfish may provide new perspectives on molecular breeding for screening individuals with many special traits.