This document summarizes work using PacBio long reads to improve the Atlantic cod genome assembly. Error-corrected and raw PacBio reads were used with different assembly programs. Both helped increase contig and scaffold lengths over the previous assembly, with raw reads performing best. Bridgemapper validation found misassemblies corrected by PacBio. The improved assembly met goals of <5% gaps and scaffold N50 over 1 Mbp. Lessons included developing programs to handle cod's heterozygosity and structural variation better. The new assembly version aims to have 23 pseudochromosomes and improved annotation.