Enables fatty acid elongase activity. Involved in fatty acid elongation, polyunsaturated fatty acid and very long-chain fatty acid biosynthetic process. Predicted to be located in dendritic tree; endoplasmic reticulum; and neuronal cell body. Predicted to be integral component of endoplasmic reticulum membrane. Human ortholog(s) of this gene implicated in spinocerebellar ataxia type 38. Orthologous to human ELOVL5 (ELOVL fatty acid elongase 5). [provided by Alliance of Genome Resources, Apr 2022]