02920nas a2200229 4500008004100000022002500041245016400066210006900230260001600299490000800315520215800323653001402481653001502495653001402510653002002524653001302544100002402557700002302581700002802604700002002632856003802652 2025 eng d a0022-1112, 1095-864900aReview of the southern African slender stonebashers, genus Heteromormyrus Steindachner 1866 (Teleostei: Mormyridae), with description of six new species0 aReview of the southern African slender stonebashers genus iHeter cSep-17-20250 v1083 a

Recent molecular studies have advanced our knowledge of the taxonomic diversity and generic placement of the slender stonebashers, previously placed in the genus Hippopotamyrus, in southern Africa. These fishes were recently transferred to the genus Heteromormyrus whose range encompasses the Kwanza, Kunene, Okavango, Zambezi, Pungwe and Buzi River systems in southern Africa, as well as the southern tributaries of the Congo River system. The present study builds on previous research that identified at least eight candidate species within the Heteromormyrus ansorgii species complex by providing formal descriptions for six new species and redescriptions of Heteromormyrus pauciradiatus and H. ansorgii s.s. The Kwanza River system is peculiar because it currently has five known species in this genus, some of which are co‐distributed, whereas the other river systems have only one or two species in this genus. Two of the new species, Heteromormyrus dolichorhynchus sp. nov. and Heteromormyrus angusticaudata sp. nov., are endemic to the Kwanza River system. Heteromormyrus xanekweorum sp. nov. is confined to the Okavango River system, Heteromormyrus chilembwei sp. nov. occurs in the Ruo River (lower Zambezi River system), Heteromormyrus tangwenai sp. nov. is endemic to the Pungwe River system and Heteromormyrus ndauorum sp. nov. is endemic to the Buzi River system. Species in this genus exhibit high morphological similarity, but they can be separated by a combination of characters, including scale counts, dorsal‐ and anal‐fin ray counts, vertebral counts, caudal peduncle depth, position of nostrils, head shape and variation in colour pattern. Taxonomic diversity within this genus is likely to be higher than currently known, and future studies, particularly in the Kwanza and upper Zambezi rivers, are anticipated to uncover additional new species.

10aDiversity10afreshwater10amormyrids10asouthern Africa10aTaxonomy1 aMutizwa, Tadiwa, I.1 aKadye, Wilbert, T.1 aBragança, Pedro, H. N.1 aChakona, Albert uhttps://doi.org/10.1111/jfb.7019103382nas a2200349 4500008004100000022001400041245018800055210006900243260002300312300001200335490000900347520225000356653003002606653001902636653001902655653001902674653001702693653001302710653001402723653002402737100002202761700002102783700001702804700001902821700002002840700002402860700003202884700002502916700002102941700002302962856004702985 2022 eng d a1313-298900aMitogenome recovered from a 19th Century holotype by shotgun sequencing supplies a generic name for an orphaned clade of African weakly electric fishes (Osteoglossomorpha, Mormyridae)0 aMitogenome recovered from a 19th Century holotype by shotgun seq bPensoft Publishers a163-1960 v11293 a

Heteromormyrus Steindachner, 1866, a genus of Mormyridae (Teleostei: Osteoglossomorpha), has been monotypic since the description of Heteromormyrus pauciradiatus (Steindacher, 1866) from a single specimen. No type locality other than “Angola” was given and almost no specimens have been subsequently identified to this species. In order to investigate the relationship of this taxon to fresh specimens collected in Angola and elsewhere, whole genome paired-end sequencing of DNA extracted from the holotype specimen of Heteromormyrus pauciradiatus was performed and a nearly complete mitogenome assembled from the sequences obtained. Comparison of cytochrome oxidase I and cytochrome b sequences from this mitogenome to sequences from recently collected material reveal that Heteromormyrus pauciradiatus is closely related to specimens identified as Hippopotamyrus ansorgii (Boulenger, 1905), Hippopotamyrus szaboi Kramer, van der Bank & Wink, 2004, Hippopotamyrus longilateralis Kramer & Swartz, 2010, as well as to several undescribed forms from subequatorial Africa collectively referred to in the literature as the “Hippopotamyrus ansorgii species complex” and colloquially known as “slender stonebashers.” Previous molecular phylogenetic work has shown that these species are not close relatives of Hippopotamyrus castor Pappenheim, 1906, the type species of genus Hippopotamyrus Pappenheim, 1906 from Cameroon, and are thus misclassified. Hippopotamyrus ansorgii species complex taxa and another species shown to have been misclassified, Paramormyrops tavernei (Poll, 1972), are placed in genus Heteromormyrus and one genetic lineage from the Kwanza and Lucala rivers of Angola are identified as conspecific Heteromormyrus pauciradiatus. Three additional new combinations and a synonymy in Mormyridae are introduced. The morphological characteristics and geographical distribution of the genus Heteromormyrus are reviewed. The electric organ discharges (EODs) of Heteromormyrus species are to be treated in a separate study.

10aAngolan freshwater fishes10aHeteromormyrus10aHippopotamyrus10ahistorical DNA10amitogenomics10amormyrid10amuseomics10aslender stonebasher1 aSullivan, John, P1 aHopkins, Carl, D1 aPirro, Stacy1 aPeterson, Rose1 aChakona, Albert1 aMutizwa, Tadiwa, I.1 aMukweze Mulelenu, Christian1 aAlqahtani, Fahad, H.1 aVreven, Emmanuel1 aDillman, Casey, B. uhttps://doi.org/10.3897/zookeys.1129.9028700456nam a2200121 4500008004100000022002300041245005600064210004900120260004200169490000900211100001500220856009900235 2000 eng d aHyb: 3-540-14811-600aThe Mormyridae and other Osteoglossomorpha (CD-ROM)0 aMormyridae and other Osteoglossomorpha CDROM aNew YorkbSpringer Verlag, ETI-UNESCO0 v20001 aHarder, W. uhttps://www.amazon.com/Mormyridae-Osteoglossomorpha-Biodiversity-Database-CD-ROM/dp/354014811600566nas a2200157 4500008004100000022001400041245013800055210006900193260001200262300001100274490000700285100001800292700002900310700001800339856005100357 2004 eng d a1463-640900aHippopotamyrus ansorgii species complex in the Upper Zambezi River System with a description of a new species, H. szaboi (Mormyridae)0 aHippopotamyrus ansorgii species complex in the Upper Zambezi Riv c01/2004 a1 - 180 v331 aKramer, Bernd1 avan der Bank, F., Herman1 aWink, Michael uhttps://mormyrids.efishgenomics.com/fr/node/49