Chromosomal-Level Assembly of Antarctic Scaly Rockcod, Trematomus loennbergii Genome Using Long-Read Sequencing and Chromosome Conformation Capture (Hi-C) Technologies

Trematomus species (suborder Notothenioidei; family Nototheniidae) are widely distributed in the southern oceans near Antarctica. There 11 recognized genus Trematomus, and notothenioids known to have high chromosomal diversity (2n = 24–58) because of relatively recent rapid adaptive radiation. Herein, we report chromosomal-level genome assembly T. loennbergii, first characterized representative Trematomus. The final loennbergii was obtained using a Pacific Biosciences long-read sequencing platform high-throughput chromosome conformation capture technology. Twenty-three scaffolds were assembled 940 Mb total size, with longest contig size 48.5 N50 length 24.7 Mb. contained 42.03% repeat sequences, 24,525 protein-coding genes annotated. We produced high-quality loennbergii. Our results provide reference for will serve as basis studying molecular taxonomy evolution Antarctic fish.