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Fig. 1 in Two new species of the catfish genus Trichomycterus (Siluriformes: Trichomycteridae) from the rio Ribeira de Iguape Basin, Southeastern Brazil
Fig. 1. Geographic distribution of Trichomycterus tupinamba (squares) and Trichomycterus jacupiranga (triangles). Dotted lines delimit Ribeira de Iguape river basin.
Fig. 2 in Description and relationships of Otothyropsis marapoama, a new genus and species of Hypoptopomatine catfish (Siluriformes: Loricariidae) from rio Tietê basin, southeastern Brazil
Fig. 2. Southeastern Brazil showing type-locality of Otothyropsis marapoama in the middle stretch of the rio Tietê basin (1: rio Tietê; 2: rio Grande; 3: rio Paraná; 4: rio Paranapanema; 5: rio Ribeira de Iguape; 6: rio Paraíba do Sul).
Fig. 10 in Description and relationships of Otothyropsis marapoama, a new genus and species of Hypoptopomatine catfish (Siluriformes: Loricariidae) from rio Tietê basin, southeastern Brazil
Fig. 10. Phylogenetic relationships of Otothyropsis marapoama. Characters states supporting nodes are unambiguous characters published by Schaefer (1998), except for characters 47, 48 and 49, included in our reanalysis. Paedomorphic characters commented in the text represent putative additional synapomorphies of Otothyris and Pseudotothyris.
Fig. 1 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 1. Geographic distribution of the material examined (stars): (1) Astyanax totae sp. n., rio Tortuoso basin, upper rio Iguaçu basin; (2) Astyanax sp. D, upper rio Iguaçu drainages; (3) Astyanax sp. F, rio da Várzea, rio Iguaçu basin; (4) Astyanax janeiroensis, rio Ribeira basin; (5) Astyanax aff. scabripinnis, rio Morato, coastal drainage of southeastern Brazil; (6) Astyanax sp., rio Tibagi, upper rio Paraná system.
Fig. 5 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 5. Anova box-whisker plots of the Orbital diameter as a percentage of Head Length in Astyanax totae, A. cremnobates and A. brachypterygium. Significant differences using oneway analysis of variance test were found among the species (F=46.83, P<0.001). Mean represented by squares, and confidence intervals (95%) as lateral bars of box-whisker plots. Asterisks represent extreme values.
Fig. 4 in Riffle and pool fish communities in a large stream of southeastern Brazil
Fig. 4. Multidimensional scaling plot of Hypostomus hermani abundance in the riffle reach showing its predominance (shown by circle size) during the high-waters. Each symbol represents a month.
Fig. 3 in Riffle and pool fish communities in a large stream of southeastern Brazil
Fig. 3. Multidimensional scaling plot based on species abundance data in the riffle (a) and pool reaches (b) according to low and high-waters level. Each symbol represents a month.
Fig. 1 in Riffle and pool fish communities in a large stream of southeastern Brazil
Fig. 1. Model of species abundance for each mesohabitat studied in the ribeirão Santa Bárbara, southeastern Brazil.
Fig. 4 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 4. Orbital diameter as function of Head Length in Astyanax totae, A. cremnobates and A. brachypterygium. Note that the confidence intervals (95%) do not overlap in A. totae and A. brachypterygium, indicating significant difference. In head lengths of about 8 to 21 mm the 95% confidence intervals do not overlap in A. totae and A. cremnobates, indicating a significant difference in these size ranges.
Fig. 3. Astyanax totae, MHNCI 11248, 56.3 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 3. Astyanax totae, MHNCI 11248, 56.3 mm SL. Maxilla (top-left), premaxilla (top-right) and lower jaw (bottom); lateral view; right side; scale 1.0 mm.
Fig. 2 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 2. Astyanax totae, holotype, MHNCI 10305, 61.1 mm SL, rio Cascata, tributary of rio Tortuoso, an affluent of the rio Iguaçu.
Fig. 9 in Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex
Fig. 9. Map of Southeastern South America with the geographic distribution of Trichomycterus maracaya plotted; 1, rio Grande; 2, rio Tietê; 3, rio Paraná.
Fig. 8 in Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex
Fig. 8. Branchial skeleton of Trichomycterus maracaya (LIRP 4381), 43.9 mm SL, paratype. Dorsal view. Dorsal elements of right gill arches and gill rakers not shown. Abbreviations: BB2-4, basibranchials 2 to 4; CB1-5, ceratobranchials 1 to 5; EB1-5, epibranchials 1 to 5; HB1-3, hypobranchials 1 to 3; PB3-4, pharyngobranchials 3 and 4; TP, tooth plate. Scale bar = 1 mm.
Fig. 7 in Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex
Fig. 7. Left hyoid arch of Trichomycterus maracaya (LIRP 4381), 43.9 mm SL, paratype. Lateral view. Abbreviations: AC, anterior ceratohyal; BR, branchiostegal rays; IC, interceratohyal cartilage; PC, posterior ceratohyal; VH, ventral hypohyal. Scale bar = 1.5 mm.
Fig. 11 in Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex
Fig. 11. Trichomycterus sp. of the T. brasiliensis species-complex (LIRP 818), Brazil: São Paulo: município de Cássia dos Coqueiros, ribeirão da Boiada, rio Pardo basin (21º17'40"S 47º08'49"W). a, juvenile, 32.8 mm SL; b, presumed adult, 60.4 mm SL.
Fig. 5 in Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex
Fig. 5. Cranium and Weberian complex of Trichomycterus maracaya (LIRP 4381), 43.9 mm SL, paratype. Dorsal view. Abbreviations: AF, anterior fontanel; AN, antorbital; AP, autopalatine; EP, epioccipital; FR, frontal; LE, lateral ethmoid; i1, infraorbital sensory branch 1; i3, infraorbital sensory branch 3; i10-11, infraorbital sensory branches 10 and 11; ME, mesethmoid; MX, maxilla; NA, nasal; PF, posterior fontanel; PM, premaxilla; po1-2, postotic sensory branches 1 and 2; PS, posttemporosupracleithrum; PT, pterotic; s1, supraorbital sensory branch 1; s3, supraorbital sensory branch 3; s6, supraorbital sensory branch 6 (epiphyseal branch); RF, foramen for ramus lateralis accessorius facialis; "SO", tendon-bone supraorbital; SP+PO+PN, sphenoticprootic-pterosphenoid complex bone; SU, parietosupraoccipital; WC, Weberian capsule. Scale bar = 2 mm.
Fig. 1. A in Scientific Note Courtship behavior and spawning of the hairy blenny Labrisomus nuchipinnis (Labrisomidae) in southeastern Brazil
Fig. 1. A couple of Labrisomus nuchipinnis (about 150 mm TL) engaged in a "mating cycle" at São Sebastião Channel, São Paulo, southeastern Brazil. Photos and drawings: FZG & HFS.
Fig. 1 in Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex
Fig. 1. Trichomycterus maracaya. (ZUEC 6137), 48.8 mm SL, holotype; Morro do Ferro, município de Poços de Caldas, Minas Gerais, southeastern Brazil.
Fig. 4 in Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex
Fig. 4. Head of Trichomycterus maracaya in dorsal view (LIRP 4381), 51.3 mm SL, paratype, showing pattern composed of two-layered blotches and spots (densely packed lower layer drawn as regularly spaced lighter dots, and loosely grouped upper layer drawn as irregularly spaced darker dots). Abbreviations: i1, infraorbital sensory branch 1; i3, infraorbital sensory branch 3; i10-11, infraorbital sensory branches 10 and 11; ll1-2, lateral line sensory branches 1 (supracleithral sensory branch) and 2; po1-2, postotic sensory branches 1 and 2; s1, supraorbital sensory branch 1; s3, supraorbital sensory branch 3; s6, supraorbital sensory branch 6 (epiphyseal branch). Scale bar = 4 mm.
Fig. 6 in Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex
Fig. 6. Left suspensorium and opercular series of Trichomycterus maracaya (LIRP 4381), 43.9 mm SL, paratype. Lateral view. Abbreviations: HY, hyomandibula; IO, interopercle; MT, metapterygoid; OP, opercle; PO, preopercle; QU, quadrate. Scale bar = 1 mm.
ScienceDex guides
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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.