Enables acetylcholinesterase activity. Acts upstream of or within several processes, including acetylcholine catabolic process; cellular response to methanol; and response to amphetamine. Predicted to be located in extracellular region; membrane; and synapse. Predicted to be active in extracellular space and plasma membrane. Is expressed in several structures, including female organism; male organism; muscle; nervous system; and neural tube. Human ortholog(s) of this gene implicated in Alzheimer's disease; drug dependence (multiple); epilepsy; myasthenia gravis; and subacute delirium. Orthologous to human ACHE (acetylcholinesterase (Yt blood group)).