Redefinition of Heptapterus (Heptapteridae) and description of Heptapterus carmelitanorum, a new species from the upper Paraná River basin in Brazil

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; anal fin not confluent with caudal fin; and extremely elongate body, with a head length of 16.1–24.9%SL. Species included in Heptapterus are H. borodini, H. carmelitanorum, H. carnatus, H. exilis, H. hollandi, H. mandimbusu, H. mbya, H. mustelinus, H. ornaticeps, and H. qenqo. Some of the character states diagnosing H. carmelitanorum among its congeners are the anal-fin insertion less than one eye diameter posterior to a vertical through the adipose-fin insertion (vs. more than one eye diameter in all congeners); the isognathous mouth (vs. slightly to moderately retrognathous, except H. borodini); and the keel formed by ventral procurrent caudal-fin rays shallow, far from reaching anal-fin base (vs. keel formed by ventral procurrent caudal-fin rays deep, continuing almost to the anal-fin base, except in H. borodini and H. hollandi).Fil: de Carvalho Deprá, Gabriel. Universidade Estadual de Maringá; BrasilFil: Aguilera, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina. Fundación Miguel Lillo; ArgentinaFil: Faustino Fuster, Dario R.. Universidade Federal do Rio Grande do Sul; Brasil. Universidad Nacional Mayor de San Marcos; Perú. Universidad Nacional Autónoma de Huanta; PerúFil: Katz, Axel M.. Universidade Federal do Rio de Janeiro; BrasilFil: Azevedo Santos, Valter M.. Faculdade Eduvale de Avaré; Brasil. Universidade Federal do Pará; Brasil. Universidade Federal Do Tocantins; Brasi

FIGURE 9 in Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini)

FIGURE 9. Geographic distribution and habitat of Geophagus pyrineusi. A. Map of the central portion of the rio Tapajós basin, showing the type locality (white circle) and additional localities (red stars) from where G. pyrineusi is known. B. Type locality, Brazil, Mato Grosso, Alta Floresta, rio Cristalino, tributary of rio Teles Pires, rio Tapajós basin. Photo by Cléber Ricardo dos Santos.Published as part of Deprá, Gabriel De Carvalho, Ohara, Willian Massaharu & Silva, Hugmar Pains, 2022, Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini), pp. 37-53 in Zootaxa 5162 (1) on page 50, DOI: 10.11646/zootaxa.5162.1.2, http://zenodo.org/record/679665

Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini)

Deprá, Gabriel De Carvalho, Ohara, Willian Massaharu, Silva, Hugmar Pains (2022): Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini). Zootaxa 5162 (1): 37-53, DOI: https://doi.org/10.11646/zootaxa.5162.1.

FIGURE 3 in Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini)

FIGURE 3. Schematic representation of non-melanophoric flank marks, and part of the fin marks present in species of Geophagus.Published as part of <i>Deprá, Gabriel De Carvalho, Ohara, Willian Massaharu & Silva, Hugmar Pains, 2022, Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini), pp. 37-53 in Zootaxa 5162 (1)</i> on page 41, DOI: 10.11646/zootaxa.5162.1.2, <a href="http://zenodo.org/record/6796653">http://zenodo.org/record/6796653</a&gt

FIGURE 2 in Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini)

FIGURE 2. Schematic representation of non-melanophoric head marks present in species of Geophagus.Published as part of Deprá, Gabriel De Carvalho, Ohara, Willian Massaharu & Silva, Hugmar Pains, 2022, Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini), pp. 37-53 in Zootaxa 5162 (1) on page 40, DOI: 10.11646/zootaxa.5162.1.2, http://zenodo.org/record/679665

FIGURE 8 in Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini)

FIGURE 8. Melanophoric marks present in Geophagus pyrineusi, new species (some marks absent in some specimens). DMP, dorsal melanophoric patch; FB, flank bar; RB, residual bar; LMP, lateral melanophoric patch.Published as part of <i>Deprá, Gabriel De Carvalho, Ohara, Willian Massaharu & Silva, Hugmar Pains, 2022, Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini), pp. 37-53 in Zootaxa 5162 (1)</i> on page 49, DOI: 10.11646/zootaxa.5162.1.2, <a href="http://zenodo.org/record/6796653">http://zenodo.org/record/6796653</a&gt

Ichthyofauna of the Ribeirão Frutal and tributaries, upper Rio Paraná basin, Minas Gerais, Southeastern Brazil

<div><p>Abstract: 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 species of fishes representing five orders and ten families. We identify a likely undescribed and five non-native species in the Frutal basin. Lastly, we recommend new surveys of fishes in small hydrographic basins within upper Rio Paraná system.</p></div