Predicted to enable alpha-N-acetylgalactosaminide alpha-2,6-sialyltransferase activity. Predicted to be involved in ganglioside biosynthetic process and oligosaccharide metabolic process. Predicted to be located in Golgi apparatus and membrane. Predicted to be integral component of membrane. Is expressed in several structures, including alimentary system; central nervous system; hemolymphoid system; integumental system; and sensory organ. Orthologous to human ST6GALNAC4 (ST6 N-acetylgalactosaminide alpha-2,6-sialyltransferase 4). [provided by Alliance of Genome Resources, Apr 2022]