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590 results for “Neotropical fish”
Implications of overfishing of frugivorous fishes for cryptic function loss in a Neotropical floodplain
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Data from: Stability and generalization in seed dispersal networks: a case study of frugivorous fish in Neotropical wetlands
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Fruit preferences by fishes in a Neotropical floodplain
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Data from: Assessing species boundaries using multilocus species delimitation in a morphologically conserved group of Neotropical freshwater fishes, the Poecilia sphenops species complex (Poeciliidae)
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Elements of fish metacommunity structure in Neotropical freshwater streams
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Riverscape properties contribute to the origin and structure of a hybrid zone in a Neotropical freshwater fish
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Data from: Unique evolutionary trajectories in repeated adaptation to hydrogen sulphide-toxic habitats of a neotropical fish (Poecilia mexicana)
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Fig. 2. Karyotypes arranged from C-banded chromosomes. a in Cytogenetic markers as tools in delimiting species of the highly diverse Neotropical fish Bryconamericus (Characiformes: Characidae)
Fig. 2. Karyotypes arranged from C-banded chromosomes. a. Bryconamericus aff. iheringii (Ijuí River, pattern II); b. B. aff. iheringii (Iguaçu River); c. B. coeruleus (pattern II); d. B. cf. ecai; e. B. cf. eigenmanni. Scales bar = 10 μm.
Fig. 1 in Cytogenetic markers as tools in delimiting species of the highly diverse Neotropical fish Bryconamericus (Characiformes: Characidae)
Fig. 1. Karyotypes arranged from Giemsa-stained chromosomes. Pairs of the AgNORs are in the boxes. a. Bryconamericus aff. iheringii (Ijuí River) - box I: pattern I; box II: pattern II; b. B. aff. iheringii (Iguaçu River); c. B. coeruleus - box I: pattern I; box II: pattern II; box III: pattern III; d. B. cf. ecai; e. B. cf. eigenmanni. Scales bar = 10 μm.
Fig. 3. Karyotypes after FISH with 5S in Cytogenetic markers as tools in delimiting species of the highly diverse Neotropical fish Bryconamericus (Characiformes: Characidae)
Fig. 3. Karyotypes after FISH with 5S rDNA probes (red) and 18S rDNA probe (green). In the boxes, the intra-population variations that represent distinct patterns of localization of ribosomal genes. a. Bryconamericus aff. iheringii (Ijuí River, pattern II) - box I: pattern I; b. B. aff. iheringii (Iguaçu River); c. B. coeruleus (pattern II) - box I: pattern I; box III: pattern III; d. B. cf. ecai; e. B. cf. eigenmanni. Scales bar = 10 μm.
Fig. 4 in Cytogenetic markers as tools in delimiting species of the highly diverse Neotropical fish Bryconamericus (Characiformes: Characidae)
Fig. 4. Idiogram comparing the cytogenetic characteristics of the four Bryconamericus species. a B. aff. iheringii (Ijuí River): patterns I and II; b B. aff. iheringii (Iguaçu River); c B. coeruleus: patterns I, II and II; d B. cf. ecai; e B. cf. eigenmanni.
Fig. 4. Mismatch distribution for mitochondrial haplotypes for 92 in Genetic diversity and population structure of Brycon nattereri (Characiformes: Bryconidae): a Neotropical fish under threat of extinction
Fig. 4. Mismatch distribution for mitochondrial haplotypes for 92 individuals of Brycon nattereri from the Laranjinha River.
Fig. 2 in Genetic diversity and population structure of Brycon nattereri (Characiformes: Bryconidae): a Neotropical fish under threat of extinction
Fig. 2. Bayesian analysis results (Structure). a. Values of K obtained based on ΔK. b. Values of K obtained based on mean likelihood Ln (K). c. Graphic representation of K = 2. Each column represents a different individual and the colors denote the probable ancestry coefficient of the individual and each genetic cluster.
Fig. 1 in Genetic diversity and population structure of Brycon nattereri (Characiformes: Bryconidae): a Neotropical fish under threat of extinction
Fig. 1. Brycon nattereri sampling sites along the Laranjinha River (A, B, C and D). Also shown are the sampling sites used in a previous study (D, E, F, G, H, I and J) and the number of individuals of B. nattereri collected at each site (in parentheses). On the South America map, numbers and arrows indicate the Paraná, Tocantins, and São Francisco basins and the asterisks indicate the areas with records of Brycon nattereri (Rosa, Lima, 2008; Viana et al., 2013; Frota et al., 2016).
Fig. 2 in Water temperature affects aggressive interactions in a Neotropical cichlid fish
Fig. 2. Mean ± SE of initial (third day) and final (eighth day) frequencies of a. restrained aggression and b. overt aggression of isolated fish against the mirror for Cichlasoma paranaense. Different letters show differences among treatments. Mixed Model ANOVA completed by Fisher-LSD post hoc test.
Fig. 1 in Water temperature affects aggressive interactions in a Neotropical cichlid fish
Fig. 1. Mean ± SE of initial (third day) and final (eighth day) latency of swimming activity of isolated fish Cichlasoma paranaense. Different letters indicate statistical significance among treatments. Mixed Model ANOVA completed by Fisher-LSD post hoc test.
Fig. 3 in Plasticity in the shape and growth pattern of asteriscus otolith of black prochilodus Prochilodus nigricans (Teleostei: Characiformes: Prochilodontidae) freshwater Neotropical migratory fish
Fig. 3. Cluster analysis based on the euclidean distances of the wavelet functions by shape analysis of asteriscus otoliths Prochilodus nigricans between rivers. S (Solimões); J (Japurá) and N (Negro).
Fig. 2 in Plasticity in the shape and growth pattern of asteriscus otolith of black prochilodus Prochilodus nigricans (Teleostei: Characiformes: Prochilodontidae) freshwater Neotropical migratory fish
Fig. 2. Canonical variate analysis of the first 5 PC compo- nents and fish length data of the Prochilodus nigricans for all localities, with 95% confidence. Solimões (blue); Japurá (red) and Negro (green).
FIGURE 4 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 4. Lateral view of immature G. ardilai, 34 mm TL.
FIGURE 3 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 3. Head profiles of Gymnotus ardilai. (A) Holotype, (B) Paratypes.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.