Predicted to enable exo-alpha-(2->3)-sialidase activity and exo-alpha-(2->8)-sialidase activity. Predicted to be involved in several processes, including ganglioside catabolic process; glycoprotein catabolic process; and negative regulation of neuron projection development. Predicted to be located in several cellular components, including endoplasmic reticulum membrane; lysosome; and mitochondrial membrane. Predicted to be active in cytoplasm; intracellular membrane-bounded organelle; and membrane. Orthologous to human NEU4 (neuraminidase 4). [provided by Alliance of Genome Resources, Apr 2022]