Currently, there are at least 82 species belonging to 12 families known from Rwandese waters. With at least 37 species, cichlids are by far the largest fish family in the country followed by Cyprinidae, Mormyridae and Mochokidae, respectively represented by 24, 6 and 4 species. The other 8 families are represented by one or two species only. The presence of at least 12 species is the result of introductions by humans.

Fish specimen collecting fieldwork and training was conducted from 23 August-4 September, 2021 and August 7-18, 2022. Several sites were visited and sampled within the Nyungwe National Forest including: the Kamiranzovu wetland; Swamp between Karamba and Kamiranzovu swamps southern edge; Bigugu Trail, and Kamiranzovu Trail, Isumo waterfall Trail, and Kitabi Creek. Specimens were collected in duplicate sets when possible to be deposited in the Royal Belgium Institute for Natural Sciences, Belgium. Specimens deposited in the CoEB Natural History Museum are published below.