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Fig. 5 in A new colorful species of Geophagus (Teleostei: Cichlidae), endemic to the rio Aripuanã in the Amazon basin of Brazil

Fig. 5. Geophagus mirabilis, living specimen in aquarium, not preserved. Photograph by Oliver Lucanus.

Fig. 6 in A new colorful species of Geophagus (Teleostei: Cichlidae), endemic to the rio Aripuanã in the Amazon basin of Brazil

Fig. 6. Map of the geographic distribution of Geophagus mirabilis. Star corresponds to type-locality; circles correspond to other localities where the species is found. One symbol can correspond to more than one locality.

Fig. 1 in A new colorful species of Geophagus (Teleostei: Cichlidae), endemic to the rio Aripuanã in the Amazon basin of Brazil

Fig. 1. Geophagus mirabilis, holotype, MCP 48123, 124.1 mm SL, Brazil, State of Mato Grosso, município de Aripuanã, rio Aripuanã upstream from Dardanelos falls. Photograph by Luiz F. C. Tencatt.

Fig. 4. Geophagus mirabilis, NUP 15117, 107.8 in A new colorful species of Geophagus (Teleostei: Cichlidae), endemic to the rio Aripuanã in the Amazon basin of Brazil

Fig. 4. Geophagus mirabilis, NUP 15117, 107.8 mm SL, Brazil, State of Mato Grosso, município de Juína, rio Aripuanã, upstream from Dardanelos/Andorinhas falls. Lower pharyngeal jaw in occlusal aspect, anterior portion upwards. (A) and (B), lateral view of two different teeth, proportionally enlarged, anterior portion to left side. Scale bar = 1 mm, not applied to (A) and (B).

Fig. 3 in A new colorful species of Geophagus (Teleostei: Cichlidae), endemic to the rio Aripuanã in the Amazon basin of Brazil

Fig. 3. Ventral view of head, showing the shape of lips, in (A) Geophagus mirabilis, paratype, UFRO-I 21285, 151.6 mm SL, Brazil, State of Mato Grosso, município de Aripuanã, rio Aripuanã, upstream from Dardanelos/Andorinhas falls; (B) G. camopiensis, MZUSP 32888, 112.6 mm SL. Arrow heads indicate lateralis foramina 1 and 2 in (A) and lateralis foramen 2 in (B). Photograph by Celso Ikedo.

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FIGURE 1 in Description of a new species of Cyphocharax from the rio Juma, rio Aripuanã basin, southern Amazon basin (Teleostei: Curimatidae)

FIGURE 1 | Cyphocharax orion, LBP 34856, holotype, 72.8 mm SL, rio Juma, rio Aripuanã basin, Apuí, Amazonas, Brazil.

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FIGURE 3 in Description of a new species of Cyphocharax from the rio Juma, rio Aripuanã basin, southern Amazon basin (Teleostei: Curimatidae)

FIGURE 3 | Map of southern Amazon basin indicating the type-locality of Cyphocharax orion (black circle) in the rio Juma near the town of Apuí, Amazonas, Brazil.

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Figures 1-8 in A new species of Diaphorocleidus (Monogenea: Ancyrocephalinae) from the gills of Argonectes robertsi (Characiformes) and new records of dactylogyrids parasitic on fishes from the Xingu River, Amazon Basin, Brazil

Figures 1-8. Diaphorocleidus altamirensis sp. nov.: (1) whole mount (composite, ventral view); (2) ventral anchor; (3) dorsal anchor; (4) ventral bar; (5) dorsal bar; (6) hook (pair 2); (7) hook, pair 5; (8) copulatory complex (dorsal). Scale bars: 1 = 100 µm, 2-5 = 25 µm, 6-7 = 10 µm, 8 = 20 µm.

FIGURE 4 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations

FIGURE 4 | Neighbor joining (NJ) tree of Hoplias inferred from partial COI (Cytochrome c Oxidase Subunit I gene) sequences using the Kimura 2-parameter model. The lateral bar indicates the partitions of species delimitation performed by the GMYC, ABGD and BIN analysis. The clade Hoplias misionera nested individuals from the La Plata and Amazon basins (blue tips).

FIGURE 7 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations

FIGURE 7 | Updated distribution map of Hoplias misionera showing former known localities in Argentina and southern Brazil (Rosso et al., 2016) and the new records from Amazon basin (triangles). Star = type locality.

FIGURE 1 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations

FIGURE 1 | Hoplias misionera, UFOPA AMTRA131-19, 237 mm SL, Amazonas River, Alenquer, Pará, Brazil. Lateral view. Scale bar = 1 cm. Photo by L.R.R. Rodrigues.

FIGURE 2 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations

FIGURE 2 | Configuration of the medial margins of the dentary in Hoplias misionera. A. Y-shaped, UFOPA AMTRA126-19, 214 mm SL. B. V-shaped, UFOPA AMTRA127-19, 232 mm SL. Scale bars = 1 cm. Photos by L. R. R. Rodrigues. Illustration by T. M. A. Lima.

FIGURE 6 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations

FIGURE 6 | Partial idiogram of the four largest chromosome pairs of Hoplias malabaricus (karyomorphs C and F) and H. misionera showing marked size reduction from the first to second metacentric pair only in the karyomorph F.

FIGURE 3 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations

FIGURE 3 | Last vertical series of scales on the base of the caudal-fin rays. Comparison between Hoplias misionera (A), UFOPA AMTRA131-19, 237 mm SL and Hoplias cf. malabaricus (B), UFOPA AMTRA110, 201 mm SL. Scale bars = 1 cm. Photos by L. R. R. Rodrigues. Illustration by T. M. A. Lima.

FIGURE 5 in Integrative taxonomy reveals disjunct distribution and first record of Hoplias misionera (Characiformes: Erythrinidae) in the Amazon River basin: morphological, DNA barcoding and cytogenetic considerations

FIGURE 5 | Karyotype of Hoplias misionera from Amazon basin (2n=40 chromosomes). Conventional Giemsa stained (A), C-banded (B) and mapping of 18S rDNA FISH probes (green signals) (C). The Ag-NOR bearing chromosomes are showed in the box.

FIGURE 4 in The influence of landscape at multiple spatial scales of the river basins at the Eastern Amazon fish assemblage

FIGURE 4 | Venn's diagram showing the exclusive and shared explanation of environmental variables (local, land use, and macroscale) and space in structuring fish assemblages in four catchments of the Eastern Amazon. Local = variation explained by the local matrix (variables of instream habitat); land use = variation explained by the land-use matrix (agriculture, pasture, and urbanization of drainagenetwork buffers and catchment); space = variation explained by the space matrix (environmental filters); macroscale = variation explained by the matrix of macroscale variables (soil characteristics and geographic factor); and residue = variation not explained. * p <0.05.

FIGURE 3 in The influence of landscape at multiple spatial scales of the river basins at the Eastern Amazon fish assemblage

FIGURE 3 | Graphic model showing the environmental and spatial variables that composed the four matrices used in the RDAp.

FIGURE 5 in The influence of landscape at multiple spatial scales of the river basins at the Eastern Amazon fish assemblage

FIGURE 5 | The dbRDA graph displays the distribution of fish data according to the most explanatory (local, macroscale, and land use) variables selected in the distLM model. Environmental variables were chosen by Forward and best model by AIC. Species code: Brachyhypopomus brevirostris (Pbre), Pyrrhulina capim (Pcap), Nannostomus trifasciatus (Ntri), Gymnorhamphichthys rondoni (Gron), Iguanodectes rachovii (Irac), Denticetopsis epa (Dent). Abbreviations: Local variables: EM: Average distance from excavated margins, MA: Average margin angle, SIN: Stretch sinuosity, SF: Smooth flow, LB: Substrate leaf bank, OM: Substrate organic matter, pH, RF: Rapids flow; TD: Average of thalweg depth; SSA: Stream sand. Macroscale variables: CLY: Catchment clay average, CSL: Catchment slope average, SDY: Catchment soil density, CSA: Catchment substrate sand; Land use: UR_S: Urbanization in 30m buffer, PAS_L: Pasture in 60m buffer, AGR_T: agriculture on catchment, PAS_S: Pasture in 30m buffer.

FIGURE 2 in The influence of landscape at multiple spatial scales of the river basins at the Eastern Amazon fish assemblage

FIGURE 2 | Scheme showing different spatial scales from which land use types were quantified in four catchments of the Eastern Amazon.

FIGURE 1 in The influence of landscape at multiple spatial scales of the river basins at the Eastern Amazon fish assemblage

FIGURE 1 | Study area containing 76 streams distributed in four Eastern Amazon basins and land use distribution. Land use: represents all uses (e.g., pasture, agriculture, and urbanization).