Enables sodium:bicarbonate symporter activity. Predicted to be involved in several processes, including bicarbonate transport; regulation of short-term neuronal synaptic plasticity; and visual perception. Predicted to act upstream of or within several processes, including brain development; locomotory exploration behavior; and regulation of cellular pH. Located in apical plasma membrane and basolateral plasma membrane. Orthologous to human SLC4A10 (solute carrier family 4 member 10). [provided by Alliance of Genome Resources, Apr 2022]