Enables arachidonate-CoA ligase activity. Involved in several processes, including dendritic spine development; long-chain fatty-acyl-CoA biosynthetic process; and positive regulation of insulin secretion. Located in mitochondrial membrane; neuronal cell body; and peroxisome. Colocalizes with endoplasmic reticulum. Human ortholog(s) of this gene implicated in intellectual disability and non-syndromic X-linked intellectual disability 63. Orthologous to human ACSL4 (acyl-CoA synthetase long chain family member 4). [provided by Alliance of Genome Resources, Apr 2022]