Pedro Bragança

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• PhD
• PostDoc Position at American Museum of Natural History

The Zambezi grunter, Parauchenoglanis ngamensis, is currently distributed across four (sub)basins in southern and south-central Africa, namely the Okavango, upper Zambezi, Kwanza, and Kasai. The present study used a combination of molecular (barcoding), colour pattern, and other morphological data to explore the possible existence of hidden species...

The rosefin barb, Enteromius argenteus, as currently described, is a freshwater fish with a distribution that is geographically separated and divided into the northern population in the Kwanza River system in Angola, and the southern population in the Inkomati River system in South Africa and Eswatini. Due to this disjunct distribution pattern, it...

Background This review compiles and synthesises the existing information concerning non-native poeciliid introductions to Africa. The recent upsurge in research on invasive poeciliids has revealed their widespread occurrence in Africa. Results Within the 87 relevant articles, 74% reported on the presence of Gambusia spp., 33% on P. reticulata , 19...

The identification of fish species by non-specialists remains a constant challenge for biodiversity management. In this regard, Robillard et al. developed a machine learning computer vision model to identify Amazonian fish at the genus level, with an accuracy of 97.9%. Their model aimed to facilitate fish identification by non-specialists, allowing...

The Zambezian Lowveld Ecoregion (ZLE) is one of the 22 freshwater ecoregions covering southern Africa. This ecoregion covers ~520,418 km² and extends from south of the Zambezi Delta in the north to the uMngeni River basin in the south. This study aimed to compile a comprehensive synthesis of the available information on the diversity and distributi...

A growing body of evidence indicates that the global diversity of freshwater fishes has not been fully documented. Studies of freshwater fishes that were previously thought to be morphologically variable have revealed the existence of deeply divergent lineages, with many distinct species. In southern Africa a number of Enteromius species exhibit ei...

Background This review compiles and synthesises the existing information concerning non-native poecillid introductions to Africa. The recent upsurge in research on invasive poeciliids has revealed their widespread occurrence in Africa. Results Within the 87 relevant articles, 74% reported on the presence Gambusia spp., 33% on P. reticulata, 19% on...

Nota de repúdio à utilização de peixes exóticosvisando o combate a larvas do mosquito AedesaegyptiO vetor de arboviroses Zika, Chikungunya,febre amarela e dengue, em ecossistemas aquá-ticos brasileiros. (PDF) Nota de repúdio à utilização de peixes exóticos visando o combate a larvas do mosquito Aedes aegypti, vetor das arboviroses Zika, chikungun...

We present the complete genome sequences of 12 species of Enteromius . Illumina sequencing was performed on genetic material from museum specimens. The reads were assembled using a de novo method followed by a finishing step. The raw and assembled data are publicly available via Genbank.

The recent surge in the discovery of hidden diversity within rheophilic taxa, particularly in West and East Africa, prompted a closer examination of the extent to which the current taxonomy may obscure the diversity of riffle-dwelling suckermouth catfishes in the genus Chiloglanis in southern Africa. Currently, the region comprises eight valid spec...

This study examines the risks associated with relying solely on images for documenting new species records, rediscoveries, taxonomic descriptions, and distribution expansions. We highlight concerns regarding image authenticity, especially in cases where images may be altered, adulterated, or AI (artificial intelligence)-generated, potentially leadi...

The Congo endemic genus Congopanchax is distinguished from all other Procato-podidae by the presence of the following exclusive character states: presence of ventral cleft in the anguloarticular, absence of premaxilla posterior margin indentation , autopalatine anterior margin concave, parhypural not contacting or slightly overlapping the hypural p...

The fish diversity of the Kundelungu National Park (KNP), one of the seven national parks of the Democratic Republic of the Congo, has never been thoroughly studied. This first checklist is presented based on a literature compilation and the study of historical (1939–1969) and recent collections (2012–2017). A total of 96 taxa are reported, includi...

Background The Maranhão State harbours great fish diversity, but some areas are still undersampled or little known, such as the Munim River Basin in the northeast of the State. This lack of knowledge is critical when considering anthropogenic impacts on riverine systems especially in the face of major habitat destruction. These pressing threats mea...

Pseudobarbus quathlambae (Barnard, 1938) is a cyprinid minnow with a disjunct distribution divided into tributaries of the Upper Orange River system in the Lesotho Highlands and the Mzimkhulu River system in KwaZulu Natal Province (KZN), South Africa. Recent records in the Mzimkhulu River system extended the species’ geographic range, and this coul...

A new seasonal killifish of the genus Nothobranchius is described from the Montepuez River system in northern Mozambique. The new species, Nothobranchius balamaensis Bragança & Chakona, is differentiated from congeners by its characteristic colour pattern and molecular data further support its taxonomic distinctiveness. Phylogenetic results based o...

The Kryptolebias marmoratus species group is composed of the only three vertebrate species that lack females. These species present only males and simultaneously hermaphroditic individuals; that are able to reproduce by allogamy, with males, or by autogamy, performing self-fertilization and generating clones of themselves. The proportion of males i...

Maranhão is one of Brazil's 27 federative units, located in the Northeastern region of Brazil, being the second largest state in this region and the eighth largest state of Brazil, corresponding to about 3.9% of the national territory. In Maranhão, there are two of the main Brazilian biomes (the Amazon and the Brazilian Cerrado), as well as several...

Forty years after the last Plataplochilus description was published, a new species, P. eliasi, is described from streams in the upper reaches of the Bondo River tributary (Noumbi Basin) in the Mayumbe Mountains of the Republic of the Congo. The new species is distinguished from all congeners by the males’ colouration pattern, which consists of a cr...

During a field expedition in 2020, we recorded specimens of an invasive platy fish, Xiphophorus maculatus, in the state of Maranhão, Brazil. This new occurrence, in the Municipality of São Luis, is only the second time that this non-native species has been found in northeastern Brazil. We provide an updated list of all invasive species recorded fro...

Recent field expeditions in the Jari river drainage, in addition to examination of uncatalogued poeciliids, allowed the identification of specimens as Poecilia (Pamphorichthys) scalpridens (Garman, 1895). The known range of this species includes lakes and igarapés in the lower reaches of tributaries near the main channel of the Amazon River between...

Recent statements from the Brazilian federal government indicate that impacting economic activities, particularly commercial shrimp farming, are being encouraged in mangrove areas in the near future. Alterations of the National Action Plan and legal instruments that partially protected mangrove ecosystems have created an even weaker legal framework...

Available ecological information, an extensive distributional range, conflicting osteological data, and a proposed early Miocene origin provide the impetus for the present study which investigates genetic structuring, biogeographic, and phylogenetic relationships within the Aplocheilichthys spilauchen lineage. Through the analysis of the mitochondr...

The ‘‘Lacustricola’’ hutereaui species complex is herein defined by the possession of banded dorsal, anal, and caudal fins in males and also by the pointed premaxilla ascending process, in which the premaxilla medial surface is slightly convex. ‘‘Lacustricola’’ pygmaeus, new species, known from the Okavango, Cuando, and upper Zambezi Rivers, is dis...

Herein we provide detailed information from the Lectotype and Paralectotypes of Heros autochthon, and notice that is not possible to link this name to any putative Australoheros species, due to: the poor condition of the type material preservation, confusions related to the material storage, the little informative original description, and inaccura...

The poeciliid species, Poecilia kempkesi Poeser, 2013, was the fourth species of the subgenus Acanthophacelus Eigenmann, 1907 to be described, based on individuals from a single urban anthropized locality close to Paramaribo, Suriname (Poeser, 2013). The description itself lacked any section clearly distinguishing the new species from the remaining...

Despite many studies focusing on the invasive occurrence of Poecilia reticulata, the guppy, one of the most widely introduced freshwater fish species due to aquaria release and mosquito control, there are little and conflicting information about its natural distribution range. Based on extensive field surveys carried out in the Brazilian Amazon in...

Two new species of the lampeye genus Hylopanchax are described from the Ivindo River basin in the Ogowe River drainage. Hylopanchax multisquamatus, new species, and Hylopanchax thysi, new species, differ from congeners by the presence of a hyaline urogenital male papilla with small black spots and a dark‐brown reticulate pattern on the flanks of bo...

Two new species, Hyphessobrycon frickei Guimarães, Brito, Bragança, Katz & Ottoni sp. nov. and H. geryi Guimarães, Brito, Bragança, Katz & Ottoni sp. nov., are herein described, based on seven different and independent species delimitation methods, and on molecular and morphological characters, making the hypothesis of these new species supported f...

The present study explored the diversity of Nannocharax within southern Africa by implementing three species delimitation methods for a data set consisting of 37 mitochondrial cytochrome oxidase subunit I sequences. Two unilocus coalescent methods, the General Mixed Yule Coalescent (GMYC) and the Bayesian implementation of the Poisson Tree Processe...

Through the analysis of a comprehensive database of COI sequences, with the sequencing of 48 specimens , a first insight into the genetic diversity, distribution and relationships between the southern Africa "Lacustricola" species is presented. Species from "Lacustricola" occur mainly in freshwater systems within the arid savanna, and are considere...

Ammoglanis obliquussp. nov. , a minute catfish species reaching a maximum adult size of 15.5 mm, is described from the Rio Preto da Eva drainage in the central Brazilian Amazon. It is distinguished from all of its congeners in possessing an exclusive combination of character states, including the presence and number of premaxillary and dentary teet...

A new procatopodid, assigned to the genus Poropanchax, is described from a wetland habitat located adjacent to the Inga Falls in Lower Congo. Poropanchax pepo, new species, is distinguished from all congeners by a combination of characters including a higher D/A ratio, rounded anal and dorsal fins, a humeral blotch in males, and the absence of a sh...

A new procatopodid, assigned to the genus Poropanchax, is described from a wetland habitat located adjacent to the Inga Falls in Lower Congo. Poropanchax pepo, new species, is distinguished from all congeners by a combination of characters including a higher D/A ratio, rounded anal and dorsal fins, a humeral blotch in males, and the absence of a sh...

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 hav...

Here, we present the first molecular and fossil-dated analysis focusing in the Procatopodidae, a widely distributed and little known African oviparous killifish family. The analysis included 36 species representing all Procatopodidae genera except the monotypic Aapticheilichthys. Procatopodidae relationships were established through maximum likelih...

Three distinct and independent molecular-based species delimitation analyses were performed among the species and populations included within the Australoheros autrani group, based on sequences of the mitochondrial gene Cytochrome b: a tree-based method proposed by Wiens and Penkrot (WP), a Character-based DNA Barcoding (CBB) and co-alescent specie...

Pedro Henrique Negreiros de Bragança Bragança, P. H. N. 2018. Fluviphylax gouldingi and F. wallacei, two new miniature killifishes from the middle and upper Rio Negro drainage, Brazilian Amazon (Teleostei, Cyprinodontiformes, Cyprinodontoidei). Spixiana 41 (1): 133-146. Fluviphylax gouldingi spec. nov. from the upper Rio Negro drainage and F. wal­...

Species of Fluviphylax are widely distributed over the Amazon and Orinoco river drainages and are among the smallest fish in the neotropics, inhabiting areas near the margin of slow-flowing clear and black water streams and lakes. Here, we present the first multigene molecular phylogeny of Fluviphylax, including all five nominal species of Fluviphy...

Pantanodon, containing two African extant species and four European fossil species, for a long time had an uncertain position among the Cyprinodontiformes due to its peculiar morphology. In the last decades, Pantanodon has been considered closely related to African lamp-eyes of the Procatopodinae clade, which is contained in the Poeciliidae, a tele...

Hyphessobrycon ellisae, new species, is described from the coastal Piaui river basin in the Sergipe State, northeastern Brazil, based on a unique combination of character states. It exhibits the diagnostic features that define the H. flammeus species group. There are 13 valid species of Hyphessobrycon occuring in this region and H. ellisae differs...

Melanorivulus atlanticus, new species, is described on the basis of specimens collected in the coastal plains of north-eastern Brazil, constituting the first record of the genus for the Atlantic Forest biogeographical province. The new species together M. decoratus and M. jalapensis form a clade of small species, not surpassing 20 mm SL, mainly dia...

The present study expands the distribution of Krobia guianensis to the Araguari river basin, northern Brazil, previously know only from the coastal rivers basin of Guiana and Suriname. In addition, the correct catalog number of the holotype of Krobia guianensis is herein presented, as well a diagnosis for the species.

Melanorivulus rubroreticulatus, new species, is described on the basis of material collected in the lower section of the Xingu river drainage, Brazilian Amazon. It is a member of a group endemic to the region encompassing the southern Amazonas river tributaries and the Pamaiba river basin. The new species is distinguished from other congeners of th...

Two new species of the Anablepsoides urophthalmus group and three new species of the A. ornatus group, collected in the Brazilian Amazon, are described. Anablepsoides jari, new species, and A. roraima, new species, are the first records of members of the A. urophthalmus group for tributaries of the Amazonas river basin draining the Guiana Shield, b...

Members of the Hypsolebias antenori species group comprise a diverse clade of morphologically similar seasonal killifishes occurring in a vast region of the semi-arid savannah of northeastern Brazil. The present paper focuses on an assemblage of three allopatric cryptic species (H. antenori from isolated coastal river drainages, Hypsolebias igneus...

Laimosemion jauaperi, new species, from the Jauaperi river drainage, central Brazilian Amazon, is described. It was found in a shallow, black-water pool adjacent to a stream within dense forest. Laimosemion jauaperi differs from all other rivulines by possessing four pelvic-fin rays in the female (vs. 5-9), four branchiostegal rays (vs. 5-6) and th...

Nematocharax costai, new species is described from the Contas river basin, northeastern Brazil. The new species is included in the genus Nematocharax by possessing elongated branched dorsal-, anal- And pelvic-fin rays; two rows of pre-maxillary teeth in adults and practically complete row of teeth along the free ventral maxillary border. It differs...

En 2012, dans la revue Ichthyological Exploration of freshwater Pedro H.N. Bragança, Wilson J.E.M. Costa et Cecile S. Gama ont fait paraitre la description d'une nouvelle espèce : Poecilia (Micropoecilia) waiapi. Ci-dessous, un résumé de leur papier intitulé : « Poecilia waiapi, a new poeciliid from the Jari River drainage, northern Brazil. (Cypri-...

Laetacara flamannellus sp. n. is described from the northern Brazilian coastal floodplains. It differs from all its congeners by a combination of character states: presence of a dark brown or black spot located on dorsal-fin base; presence of a yellow stripe on the middle portion of the dorsal fin, crossing the whole fin; presence of an orange ring...

Melanorivulus schuncki is first recorded for a vast geographic area of the eastern Brazilian Amazon between Rego Grande River, Amapá state, and the lower Amazonas River basin, Pará state. It was found in shallow parts of clear and black water streams, as well as in broad flooded areas, both in the edge of the forest and in open savannah. Some varia...

Poecilia waiapi, new species, is described from the lower Jari river drainage, in northern Brazil. It is hypothesized to be closely related to P. branneri, P. minima and P. sarrafae by sharing eight apomorphic conditions. Poecilia waiapi differs from all of its congeners by the presence of vertical dark gray bars on the flank in males (vs. bars abs...

Poecilia sarrafae, new species, is described from the Parnaíba and Mearim river basins, in northeastern Brazil. It is hypothesized to be closely related to P. branneri and P. minima by sharing eight apomorphic conditions: teeth of the external rows of dentary and premaxilla conical; 5-7 teeth on the external rows of dentary and premaxilla; vomer pr...