Enables dihydroceramidase activity and phytoceramidase activity. Involved in response to organic substance and sphingolipid metabolic process. Located in extracellular space; mitochondrion; and plasma membrane. Is integral component of plasma membrane. Colocalizes with membrane raft. Orthologous to several human genes including ASAH2B (N-acylsphingosine amidohydrolase 2B). [provided by Alliance of Genome Resources, Apr 2022]