Gabriel C Deprá

Universidade Estadual de Maringá | UEM · NUPÉLIA - Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura

Morphological and molecular data support the description of a new Aequidens species from the upper rio Correntes, considered herein as endemic to the upper rio Paraguai basin in the Cerrado biome in Brazil. The new species is distinguished from all congeners, except from A. plagiozonatus by having anteriorly oblique dark brown flank bars vs. vertic...

The endangered species ‘Chasmocranus’ brachynema is redescribed and diagnosed among other Heptapterini by having the adipose fin extensively fused with the caudal fin, caudal fin shallowly bifurcate, and anal-fin insertion posterior to a vertical through the adipose-fin insertion, in addition to peculiarities of the head and mouth morphology. The s...

Five species of Bryconamericus are known from the upper rio Paraná basin: ‘B.’ aff. iheringii, ‘B.’ coeruleus, B.stramineus, ‘B.’ turiuba and the non-native B. exodon. The new species can be easily distinguished from them by its body depth (27.8–31.8% SL) and the teeth aligned in the outer row of the premaxilla (except ‘B.’ aff. iheringii). The new...

Professor Manuel Pereira de Godoy idealized the Natural History Museum of Pirassununga (MHNP, in Portuguese), State of São Paulo, Brazil, in 1938. In 1962, the MHNP was constructed in the backyard of his house. In 1977, the museum also received the type specimens of fishes from the defunct Estação Experimental de Biologia e Piscicultura de Pirassun...

This correspondence is about the tortuous nomenclatural history of two heptapterid species-names, viz. Pimelodus (Rhamdia) longicauda Boulenger, 1887 and Imparfinis longicauda Borodin, 1927. Here we explain how they became secondary homonyms, and how that homonymy was solved.

This study aims to report the non-native occurrence of Crenicichla semifasciata in the Upper Paraná River in the floodplain region, and the first record of the pughead condition in the species. C. semifasciata was described from the Paraguay River and there are already registers of individuals in the Upper Paraná River basin. The register downstrea...

A new diagnosis and a new classification of Heptapterus are provided and a new species, H. carmelitanorum, is described. Heptapterus is diagnosed by the following character combination: adipose fin confluent with the caudal fin; non-bifurcate caudal fin; anal-fin insertion posterior to vertical through adipose-fin insertion; 10–23 anal-fin rays; an...

Geophagus pyrineusi, new species, is described from the rio Teles Pires drainage, rio Tapajós basin, Brazil. The new species can be diagnosed from the majority of the congeners by presenting a complete infraorbital bar. Additionally, it differs from all other congeners by several coloration-related character states: flank bars 5 and 6-7 as dark as...

Phylogenetic comparative studies suggest that the direction of deviation from bilateral symmetry (sidedness) might evolve through genetic assimilation; however, the changes in sidedness inheritance remain largely unknown. We investigated the evolution of genital asymmetry in fish of the family Anablepidae, in which males' intromittent organ (the go...

This study aims to provide an annotated list of the type-material housed in the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá, Paraná, Brazil. NUP’s fish type collection hosts type-material of 157 species, distributed in 503 lots (11 holotypes and 492 lots of paratypes) to...

Several anomalies in the skeleton of fishes have been identified since the last century, generally caused by genetic and/or epigenetic factors. The pughead condition is an anomaly present in the cranial bones that can lead to some consequences many of which are related to feeding. Here we reported the pugheadedness in a specimen of Crenicichla, in...

Detecting a potentially invasive introduced species is crucial for efficient conservation strategies. We recorded the first occurrences of the "pirambeba" Serrasalmus geryi in the upper Paraná River floodplain, Brazil, in December 2019. A long-term ecological research program (PELD site 6) has been monitoring the region since 1986. One specimen was...

Two new species from the upper rio Tocantins basin are described in Knodus based on the traditional definition of the genus. The new species are distinguished from other congeners by meristic and morphometric characters, such as the number of cusps in the premaxillary and dentary teeth, the number of scale series between dorsal-fin origin and later...

A new species of Satanoperca is described from the Rio Araguaia, Rio Tocantins basin, Brazil, and non-native records are available in the upper Rio Paraná basin. It differs from congeneric species by color pattern characters, such as head and flank marks. It is included in the Satanoperca jurupari species group, characterized by the absence of blac...

An annotated checklist for the freshwater fishes from Paraná State, Brazil is provided. A total of 440 freshwater fish species are recorded for the state, distributed across five ecoregions: Upper Parana, Lower Parana, and Iguassu, all within the rio Paraná basin, and corresponding to the state’s Inland Slope, and Southeastern Mata Atlantica and Ri...

The rio das Cinzas and rio Itararé basins are important tributaries of the rio Paranapanema, a major left-bank tributary of the upper rio Paraná basin. The upper reaches of both drainages intersect the northern portion of the APA Escarpa Devoniana (Devonian Escarpment Environment Protection Area, EPA), an area considered crucial for the preservatio...

The Madeira River is the most extensive tributary of the Amazon River and has the largest diversity of fishes in the world. On its right bank, the Madeira River receives the Jamari River, in which the first hydroelectric power plant (HPP) in State of Rondônia, Samuel HPP, was built. Besides this, other dams were built in the Jamari River and its tr...

A new species of Moenkhausia is described from the upper rio Tocantins basin, States of Goiás and Tocantins, Brazil. Moenkhausia goya, new species, can be distinguished from its congeners by the shape of the humeral blotch in combination with a uniform dark pigmentation covering the interradial membranes of the dorsal and anal fins. Among congeners...

The genera Hemigrammus and Moenkhausia have been traditionally diagnosed mainly by the former having lateral line completely pored whereas the latter having a lateral line with a few pored scales. Those features have been used to diagnose species of both genera in the upper Paraná River floodplain. Specimens with the diagnostic features of Moenkhau...

The book “Peixes da planície de inundação do alto rio Paraná e áreas adjacentes” represents the most cohesive data compilation for the rio Paraná floodplain. However, considering the dynamicity of the taxonomy of freshwater fishes, several new records and taxonomic changes occurred along the past years. Therefore, the results of that publication we...

A molecular phylogeny of Planaltina, including the three previously described species and an undescribed species, is presented. The monophyly of the genus, included in Diapomini, is strongly supported. Its sister group, the remaining Diapomini, includes only species without modified caudal-fin squamation in the present analysis (species of Diapoma...

A molecular phylogeny of Planaltina, including the three previously described species and an undescribed species, is presented. The monophyly of the genus, included in Diapomini, is strongly supported. Its sister group, the remaining Diapomini, includes only species without modified caudal-fin squamation in the present analysis (species of Diapoma...

Phylogenetic analysis. Best maximum likelihood tree showing the relationships among Triportheidae, Gasteropelecidae, Bryconidae, Acestrorhynchidae, Iguanodectidae, and Characidae. Chalceidae was used as outgroup. (PNG)

Planaltina kaingang in life. Planaltina kaingang, new species, non-type specimen in life, NUP 16406, municipality of Cândido de Abreu, rio Maria Flora, rio Ivaí basin, upper rio Paraná. (TIFF)

Sequences of primers used in present study. (DOCX)

The Ribeirão Frutal basin is located within the upper Rio Paraná system, in the Frutal municipality, Minas Gerais State, Southeastern Brazil. Until now, there was no complete ichthyological survey published for this small basin. Therefore, here we provided a list of fish species from the Ribeirão Frutal and some of its tributaries. We found 31 spec...

Satanoperca curupira, new species, is described from the rio Madeira basin in the State of Rondônia, Brazil. It is distinguished from all congeners by the following combination of characters: 3–7 dark-brown oblique stripes on the lachrymal (vs. 2 well-defined dark-brown stripes, or dark-brown stripes absent) and an irregular pattern of dark-brown s...

Melanorivulus nelsoni, new species, is described from a stream draining into the upper rio Paraguai basin, in the municipality of Juscimeira, State of Mato Grosso, Brazil. It is distinguished from all other congeners, except M. pictus (Costa) and M. planaltinus (Costa & Brasil), by the lack of the pelvic fin and girdle (although only in M. nelsoni...

Recent sampling on fish from the headwaters of the Jordão and Areia rivers, combined with collection databases and specialized literature reports, yielded the first species inventory. Both basins reflect the high endemism rate associated with the Iguaçu River. However, four species previously thought to be restricted to the Jordão River basin...

Nós compilamos dados sobre a diversidade da ictiofauna da bacia do rio Ivaí proveniente de recentes informações contidas em estudos divulgados na literatura especializada, coletas padronizadas e registros das espécies depositadas em coleções ictiológicas. Foram registradas 118 espécies de peixes pertencentes a oito ordens e 29 famílias. Dessas, 100...

A ecologia trófica permite compreender mais intimamente as características ecológicas específicas de cada organismo, como as formas de forrageio e as inter-relações com outros organismos. Para entender a estrutura de um ecossistema vários fatores ecológicos podem ser analisados, um destes fatores pode ser o estudo dos recursos alimentares, quanto à...

Pimelodus mysteriosus Azpelicueta 1998, previously known only from the lower Paraná and Paraguay River basins, has been also recorded in the upper Paraná River floodplain. The only congeners occurring in syntopy with P. mysteriosus in the upper Paraná River basin are P. maculatus and P. ornatus. New diagnostic characters between P. mysteriosus and...

Geophagus mirabilis, new species, is endemic to the rio Aripuanã drainage upstream from Dardanelos/Andorinhas falls. The new species is distinguished from all other species of the genus by the presence of one to five large black spots arranged longitudinally along the middle of the flank, in addition to the black midlateral spot that is characteris...

Astyanax altiparanae, belonging to the bimaculatus group, which includes species with similar colors and morphology, occurs in the upper Paraná River basin. As the use of mitochondrial DNA has made great strides in the diagnosis of species, in previous researches, two strains were detected in A. altiparanae with a high divergence in the D-loop regi...