Predicted to enable serotonin-gated cation-selective channel activity. Involved in cellular response to growth factor stimulus and positive regulation of ion transmembrane transporter activity. Located in axon and neuronal cell body. Human ortholog(s) of this gene implicated in alcohol use disorder and mental depression. Orthologous to human HTR3B (5-hydroxytryptamine receptor 3B). [provided by Alliance of Genome Resources, Apr 2022]