Enables extracellularly glycine-gated chloride channel activity. Involved in several processes, including cellular response to ethanol; cellular response to zinc ion; and chloride transmembrane transport. Is integral component of plasma membrane. Is active in glycinergic synapse. Is integral component of postsynaptic specialization membrane. Orthologous to human GLRA3 (glycine receptor alpha 3). [provided by Alliance of Genome Resources, Apr 2022]