OOIR: Observatory of International Research

Papers

(The TQCC of Neotropical Ichthyology is 3. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-08-01 to 2026-08-01.)

Article	Citations
Chromosome spreading of the retrotransposable Rex-1 and Rex-3 elements and 5S rDNA clusters in the karyotype of Eigenmannia catira (Gymnotiformes: Sternopygidae)	44
Redescription of Hyphessobrycon cachimbensis (Characiformes: Characidae) with the description of a new congener from the Serra do Cachimbo, Brazil	16
Population genomics of Gymnogeophagus labiatus and G. lacustris reinforces the role of hydrographic isolation between evolutionary lineages (Cichlidae: Geophagini)	13
An ode to beauty: the discovery of one of the most spectacular tetras (Characiformes: Acestrorhamphidae) - a new species of Inpaichthys from the rio Juruena, Brazil	10
Description of new putative multicomponent courtship signal for mate recognition in Rachoviscus crassiceps (Characiformes: Acestrorhamphidae)	10
Redescriptions of two little-known pimelodid catfishes from the São Francisco River basin, Brazil: Duopalatinus emarginatus and Bagropsis reinhardti (Teleostei: Siluriformes)	10
Immediate effects of channelization on fish assemblages in two urban tropical streams	9
Allometric patterns in Potamotrygon motoro (Myliobatiformes: Potamotrygonidae): insights into sexual and ontogenetic variation	7
Redescription of Austrolebias accorsii (Cyprinodontiformes: Rivulidae) and description of a new species of the genus from the upper Paraguay River basin	7
Two new species of Gobioclinus (Blenniiformes: Labrisomidae) from the western South Atlantic, with comments on the conservation of cryptobenthic reef fishes in the Brazilian Province	7
Fishers’ knowledge on abundance and trophic interactions of the freshwater fish Plagioscion squamosissimus (Perciformes: Sciaenidae) in two Amazonian rivers	7
A new long-snouted Corydoras (Siluriformes: Callichthyidae) from the rio Xingu and rio Tapajós basins, Brazilian Amazon	7
Genetic diversity of the species Cnesterodon hypselurus (Cyprinodontiformes: Poeciliidae) in Cinzas River basin: new record and headwater capture evidences	7
Functional diversity and ecological patterns of reef fish assemblages across depth gradients in oceanic islands of the Brazilian Province	7
The impact of acute exposure to the glyphosate-based herbicide Templo® on yellowtail tetra fish Astyanax lacustris, both before and after treatment through a vertical flow constructed wetland system	7
Redescription and expansion of the geographic distribution of Phenacorhamdia nigrolineata (Siluriformes: Heptapteridae)	6
Integrative taxonomy data are reconciled around Arapaima gigas (Osteoglossiformes: Arapaimidae) for the Brazilian Amazon	6
A big task for a miniature species: understanding Fluviphylax simplex (Cyprinodontiformes: Fluviphylacidae) distribution	6
DNA extracted from museum specimens of the 19th century provides a taxonomic resolution on the identity of the characid fish Psalidodon jequitinhonhae (Ostariophysi: Characiformes)	6
Revision of Prodontocharax and revalidation of Amblystilbe (Teleostei: Characidae: Cheirodontinae), with description of a new species	6
Iterative taxonomy reveals a new species of Cambeva (Siluriformes: Trichomycteridae) with intraspecific variation from the rio Piquiri and Ivaí basin, upper rio Paraná basin, Brazil	6
Dispersal limitation, environmental filtering, and historical contingencies explain the patterns of taxonomic and phylogenetic turnover in Amazonian freshwater fish faunas, but only poorly their funct	6
The ichthyofaunal composition of Amazonian streams reflects localized environmental changes associated with buried mining pipeline infrastructure	6
Fish injuries resulting from transient operating conditions in a Brazilian hydropower plant: morphological, physiological and biochemical evaluation in Pimelodus maculatus (Siluriformes: Pimelodidae)	6
A new masked Corydoras (Siluriformes: Callichthyidae) from the Itaya and Nanay river basins, Peruvian Amazon	6

A new tetra of the genus Astyanax (Characiformes: Acestrorhamphidae) with lateral stripes from lower Amazon basin, Brazil	6
Evaluating sampling methods for fish diversity and composition across seasons in Northeastern Brazil’s reservoirs	5
Gonadal development and reproductive traits of pacific flat sleeper Dormitator latifrons (Gobiiformes: Eleotridae): insights for sustainable management in Ecuador	5
A new genus and species of miniature tridentine catfish from the Amazon basin (Siluriformes: Trichomycteridae)	5
A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)	5
Genetic and morphological analysis of Herichthys pantostictus (Cichliformes: Cichlidae) populations that showed mitochondrial DNA introgression	5
Different stocks of Prochilodus lineatus along the Cinzas River basin: contributions from a free-flowing tributary in the Capivara Reservoir region, Paranapanema River basin (upper Paraná River)	5
Activation of cannabinoid type 2 (CB2) receptors promotes the maintenance of redox homeostasis and protects against oxidative distress in the Neotropical freshwater fish matrinxã Brycon amazonicus (Ch	5
Mitochondrial multilocus data suggests fine-scale influences of Pleistocene events on the spatial distribution of lineages of a fish species among neighboring sub-basins in the southern upper Paraná R	5
Microplastics contamination in fish, water, and sediment surrounding Ubatuba beaches, Southeastern Brazil	5
High fish richness associated with the southernmost Atlantic coral reef and adjacencies: comments on conservation and management for sustainable use	5
How many lineages are there of the stingrays genus Hypanus (Myliobatiformes: Dasyatidae) and why does it matter?	4
Total mercury concentrations in muscles of little tunny species (Euthynnus alletteratus) sold in the city of Cabo Frio, State of Rio de Janeiro, Brazil	4
Dismantling the Phalloceros harpagos species complex (Teleostei: Poeciliidae): description of a new species from Brazilian highlands based on morphological and molecular evidence	4
Fishes of the upper rio Paraná basin: diversity, biogeography and conservation	4
Effect of dietary omega-3 polyunsaturated fatty acids supplementation of Astyanax lacustris males on semen quality	4
A new Hemigrammus (Characiformes: Acestrorhamphidae) from the rio Cuiabazinho drainages, upper rio Paraguai basin	4
A long-hidden species of Pimelodella (Siluriformes: Heptapteridae) from the upper and middle Orinoco, and western Amazon tributaries	4
Cytogenetic and COI-based analyses support a polytypic status of Astrodoras (Doradidae: Siluriformes)	4
Number of individuals, but not habitat complexity, influences the antipredator behavior of an Amazonian floodplain fish	4
Cytogenetic and molecular identification of Chaetostoma bifurcum (Siluriformes: Loricariidae) from the Pacific Coast of Ecuador	4
Research goals of special concern for Carcharhinus leucas (Carcharhiniformes: Carcharhinidae) in Latin America – biological, distributional, and conservation priorities	4
Chondrichthyan systematics in Brazil depicted: historical overview, research trends and future perspectives	4
Restricted to oceanic and coastal islands? The absence of lemon sharks (Negaprion brevirostris) along the Brazilian coast	4
Systematic assessment of the Hypomasticus steindachneri (Characiformes: Anostomidae) species complex, with the description of a new species	4
Identification of fish eggs and larvae using a novel DNA metabarcoding approach	4
Cytogenetic profiles of two circumglobal snake mackerel species (Scombriformes: Gempylidae) from deep waters of the São Pedro and São Paulo Archipelago	4
Home range and movement patterns of parrotfish in subtropical reefs of the Southwestern Atlantic	4
Dams and agricultural lands affect energy sources and the trophic position of fish in a floodplain	4
A new species of whiptail catfish Rineloricaria (Siluriformes: Loricariidae) from Macaé and São João river basins, southeastern Brazil	3
Trophic ecology of the demersal predator Brazilian flathead Percophis brasiliensis (Percophidae) in a coastal upwelling ecosystem, SW Atlantic	3
Hidden diversity in the Paraná River basin: a new species of Phenacorhamdia (Siluriformes: Heptapteridae) from the Bermejo River, Argentina	3
Description and phylogenetic position of a new species of Rhyacoglanis (Siluriformes: Pseudopimelodidae) from the Jamanxim River basin	3
DNA barcoding highlights taxonomic uncertainties and cryptic lineages of São Francisco River basin fishes	3
A new species of Ancistrus (Siluriformes: Loricariidae), with a redescription of Ancistrus brevipinnis and further evidence of hidden diversity in the laguna dos Patos system, Brazil	3
Morphological study of the digestive tract of the cardinal tetra, Paracheirodon axelrodi (Characiformes: Characidae)	3
Dietary shift of a pimelodid catfish in response to the flood pulse in the Xingu River	3
New species of Farlowella (Siluriformes: Loricariidae) from the rio Tapajós basin, Pará, Brazil	3
Molecular cloning and gene expression of desaturases and elongases in embryos, larvae, and adults of bay snook Petenia splendida (Cichliformes: Cichlidae)	3
Vulnerability of rheophilic fishes to water abstraction in pump-irrigated rice fields in southern Brazil	3
Integrative study of Characidium borellii (Characiformes: Crenuchidae): phylogenetic relationships and geographic distribution	3
Integrative taxonomy elucidates the species of Proloricaria (Siluriformes: Loricariidae)	3
Hidden diversity of the catfish genus Trachelyichthys (Siluriformes: Auchenipteridae): a revisionary study with description of four new species from the Amazon basin	3
Dynamics of fish larvae recruitment in the hydrographic basin of the Paraguay River in western Brazil	3