Understanding the function of bacteria from the hindgut of Kyphosus sydneyanus, a herbivorous fish native to Australasia, can provide further insights into the mechanisms behind the digestion of seaweed in the fish diet. Using Nanopore and Illumina sequencing data, we produced several genome assemblies to recreate and analyze the genome of a novel bacterial species isolated from the gut of K. sydneyanus. Our final assembly contains 3,009 genes and is 98.68% complete. To determine evolutionary relationships and relatedness of the novel bacterial species to other organisms, phylogenetic trees were recovered. Following genome assembly, the genome was annotated to predict gene functions in relation to metabolism. We also identified carbohydrate-active enzyme encoding genes potentially involved in breaking down seaweed, targeting substrates including carrageenan, beta-galactan, and cellulose, which are found in the cell walls of seaweed and other plants. This suggests the novel bacterial species is involved in breaking down brown seaweed, including the invasive seaweed Undaria pinnatifida, which is part of the diet of K. sydneyanus. This research is part of a large collaborative project which aims to use these bacteria to break down seaweed in a bioreactor to create natural fertilizers, vitamin supplements, and animal feeds.