First Record of Trichodina magna Van As and Basson, 1989 (Ciliophora: Trichodinidae) from Gills of Blue Tilapia Oreochromis aureus (Steindachner, 1864) in Iraq. (2018). Ibn AL-Haitham Journal For Pure and Applied Sciences, 2017(IHSCICONF), 59-63. https://doi.org/10.30526/2017.IHSCICONF.1771