Thapanand-Chaidee, Thanitha. 2017. “Fecundity Relationship, Maturity Size and Spawning Season of Shark Catfish Helicophagus Waandersii Bleeker, 1858 in the Mun River, Thailand”. Journal of Fisheries and Environment 32 (1). Bangkok, Thailand:17-29. https://li01.tci-thaijo.org/index.php/JFE/article/view/81398.