Enables GABA-A receptor activity. Acts upstream of or within gamma-aminobutyric acid signaling pathway and visual perception. Predicted to be located in axon. Predicted to be part of GABA-A receptor complex. Predicted to be active in neuron projection and synapse. Predicted to be integral component of plasma membrane. Is expressed in central nervous system; gut; male reproductive gland or organ; and retina. Human ortholog(s) of this gene implicated in autistic disorder. Orthologous to human GABRR2 (gamma-aminobutyric acid type A receptor subunit rho2). [provided by Alliance of Genome Resources, Apr 2022]