Enables long-chain fatty acid-CoA ligase activity. Involved in long-chain fatty acid metabolic process. Located in mitochondrial inner membrane. Is expressed in several structures, including alimentary system; genitourinary system; integumental system; nervous system; and sensory organ. Orthologous to human ACSL5 (acyl-CoA synthetase long chain family member 5). [provided by Alliance of Genome Resources, Apr 2022]