Involved in spermatogenesis and spliceosomal snRNP assembly. Acts upstream of or within germ cell development. Located in P granule; chromatoid body; and endoplasmic reticulum. Part of ribonucleoprotein complex. Is expressed in spermatid; spermatocyte; and testis. Orthologous to human TDRD6 (tudor domain containing 6). [provided by Alliance of Genome Resources, Apr 2022]