Enables long-chain fatty acid-CoA ligase activity. Acts upstream of or within embryonic process involved in female pregnancy and neuron differentiation. Located in mitochondrion. Is expressed in several structures, including alimentary system; integumental system; limb mesenchyme; nervous system; and sensory organ. 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]