Enables exo-alpha-(2->3)-sialidase activity and exo-alpha-(2->8)-sialidase activity. Involved in ganglioside catabolic process and oligosaccharide catabolic process. Predicted to be located in cytosol. Predicted to be part of catalytic complex. Predicted to be active in cytoplasm; intracellular membrane-bounded organelle; and membrane. Is expressed in brain. Orthologous to human NEU2 (neuraminidase 2). [provided by Alliance of Genome Resources, Apr 2022]