Masagca, Jimmy T., and Jose A. Ordonez. 2008. “CHROMOSOMES OF THE PHILLIPINE SNAKE-HEAD GUDGEON, OPHIELEOTRIS APOROS (ELEOTRIDAE) FROM LAKE TAAL, LUZ ON ISLAND”. BIOTROPIA 14 (1):1-8. https://doi.org/10.11598/btb.2007.14.1.20.