One of the current developments in biological research is bioinformatics, which combines computational technology and gene-based data to generate new understanding. It uses a variety of bioinformatics tools (software) to synthesize complicated biological information from multi-omics data (the output of high-throughput technologies). Because of their availability and ease of use, these technologies are frequently utilized in bioinformatics research. Common bioinformatics software tools used in fisheries and aquaculture research include FASTA (FAST-All), Basic Local Alignment Search Tool (BLAST), EMBOSS, RasMol and Protein Explorer, ClustalW, Cn3D, Hex, Swiss PDB viewer, Bioeditor, Vega, and others. These software applications automatically use the databases that are accessible to mine and evaluate a large biological data set. However, aquaculture scientists can utilize bioinformatics to generate biological networks and system biology, manipulate genomic data, molecular folding, model and design, as well as annotate and profile gene expression. Recently, the complex molecular mechanisms of host-pathogen interaction have been uncovered by a novel holistic approach that makes use of multi-omics platforms such as transcriptomics, proteomics, and metabolomics. Using bioinformatics in aquaculture research with limited resources, despite having enormous potential, this chapter has sought to clarify the importance of bioinformatics in aquaculture research as well as its status as a relatively new integrated subject of bio-computational research.