Enables diacylglycerol kinase activity. Involved in diacylglycerol metabolic process; lipid phosphorylation; and phosphatidic acid biosynthetic process. Located in actin cytoskeleton; cytoplasm; and plasma membrane. Is expressed in nervous system and neural retina. Orthologous to human DGKH (diacylglycerol kinase eta). [provided by Alliance of Genome Resources, Apr 2022]