For many decades, Nannocharax luapulae has been considered to be widespread in the southern part of the Upper Congo basin. However, meristic, morphometric and cytochrome c oxidase subunit I (COI) barcoding evidence revealed that its geographical distribution is restricted to the Luapula‐Moero basin. The populations of the Upper Lualaba are assigned to a new species, N. chochamandai . This new species, though highly similar to...

Within a comparative morphological framework, Hippopotamyrus aelsbroecki , only known from the holotype originating from Lubumbashi, most probably the Lubumbashi River, a left bank subaffluent of the Luapula River, is reallocated to the genus Cyphomyrus . This transfer is motivated by the fact that H. aelsbroecki possesses a rounded or vaulted predorsal profile, an insertion of the dorsal fin far anterior to the level of the i...

New collections from the Yangambi Biosphere Reserve (YBR) and Okapi Wildlife Reserve (OWR) revealed the presence of two groups of specimens similar to, but different from Marcusenius moorii . To study both these groups, an integrated morphological and genetic (mtDNA, cytb ) approach was used. This study revealed that one of the two groups is conspecific with Marcusenius lambouri , a junior synonym of M. moorii , which is herei...

A new minnow species, Enteromius thespesios , is described from the south‐eastern part of the upper Congo River; that is, the Kalule Nord, the Luvilombo and the Chambeshi Rivers. Enteromius thespesios belongs to the group of the soft‐rayed species of Enteromius from the Congo Basin; that is, those with a weakly ossified, flexible last unbranched dorsal‐fin ray that lacks serrations along its posterior edge. Within this group,...

Based on literature, museum collections and three recent expeditions, an annotated species list of the Lake Edward, East Africa, drainage system is presented, excluding the endemic haplochromines. A total of 34 non‐ Haplochromis species belonging to 10 families and 21 genera are recorded from the system. Three of these are endemic and two others have been introduced in the region. Six species are new records for the Lake Edwar...

Synodontis denticulatus sp. nov. is an endemic from the middle Lufira Basin and its associated tributaries and lakes. The species shows close morphological resemblance to Synodontis greshoffi and Synodontis unicolor, which are widespread Congo Basin and Bangweulu‐Mweru endemic species, respectively. However, it differs from both S. greshoffi and S. unicolor by its non‐villous skin ( v . villous skin), strong and numerous serra...