Assessment and Composition of Fish in the River District Maro Merauke Edy H.P Melmambessy, Irianis L. Latuperissa, Marius Agustinus Welliken, Nova Suryawati Monika and Rosa Delima Pangaribuan E3S Web Conf., 73 (2018) 04006 Published online: 21 December 2018 DOI: 10.1051/e3sconf/20187304006