Chromosome-level genome assembly of a butterflyfish,Chelmon rostratus

Abstract

1 6Chelmon rostratus (Teleostei, Perciformes, Chaetodontidae) is a copperband 1 7 butterflyfish, living in tropical areas. Just as other coral reef fish, it can be cultivated 1 8as an ornamental fish, thus providing genome information for this species might help 1 9understanding the genome evolution of Chaetodontidae (without previous genomes 2 0 available) and adaptation/evolution of coral reef fish. 2 1In this study, we sequenced and assembled a draft genome of Chelmon rostratus. 2 2Using the stLFR linked-read data, we assembled a genome of 638.88 Mb in size with 2 3 contig and scaffold N50 sizes of 294.41 kb and 2,62 Mb, respectively. Up to 21.47 % 2 4 of the genome was found to be repetitive sequences and 21,375 protein-coding genes 2 5 were annotated. Among these annotated protein-coding genes, 20,163 (94.33%) 2 6 proteins were assigned with possible functions. 2 7As the first genome for Chaetodontidae family, the information of these data helpfully 2 8 to improve the essential to the further understanding and exploration of marine 2 9 ecological environment symbiosis with coral and the genomic innovations and 3 0 molecular mechanisms contributing to its unique morphology and physiological 1 features. 2