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FIGURE 4 in Integrative taxonomy reveals a new species of pacu (Characiformes: Serrasalmidae: Myloplus) from the Brazilian Amazon

FIGURE 4 | Freshly collected Myloplus nigrolineatus with different color patterns. A. INPA 23312, 182.0 mm SL, female, lago Mabi, São Gabriel da Cachoeira, Amazonas; B. INPA 53281, 170.7–180.3 mm SL, female, rio Negro nearby Manaus, Amazonas; C. INPA 23446, 160.0 mm SL, male, tissue voucher CTGA 15401, Tapajós Itaituba, Pará; D. INPA 46279, 172.3 mm SL, male, tissue voucher CTGA 12201 (GenBank accession MG752197), rio Branco, boundary between Caracaraí and Rorainópolis, Roraima; E. INPA 58772, 189.3 mm SL, male, rio Purus, Tapauá, Amazonas; F. INPA 52505, 186.4 mm SL, male, tissue voucher CTGA 12329 (MG752209), rio Negro nearby Barcelos, Amazonas.

Fig. 2 in A new colorful species of Geophagus (Teleostei: Cichlidae), endemic to the rio Aripuanã in the Amazon basin of Brazil

Fig. 2. Geophagus mirabilis, paratype, NUP 15117, 107.8 mm SL, Brazil, State of Mato Grosso, município de Juína, rio Aripuanã, upstream from Dardanelos/Andorinhas falls, immediately after capture. Photograph by Cláudio H. Zawadzki.

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.

Figure 2 in Distribution extension of Curimatella immaculata (Fernández-Yépez, 1948) Curimatidae, Amazon, Brazil

Figure 2. Curimatella immaculata collected in the hydrographic basin Quinoá stream, State of Acre, Brazil (Picture by Fabiano Corrêa). Table 1. Morphometric measures of five Curimatella immaculata individuals captured from the hydrographic basin Quinoá stream, Acre, Brazil. SD = standard deviation.

Figure 1 in Distribution extension of Curimatella immaculata (Fernández-Yépez, 1948) Curimatidae, Amazon, Brazil

Figure 1. Distribution of Curimatella immaculata, where the black dots represent records of the specie (Vari, 1992; Dagosta and de Pinna, 2019), and the red dot indicates the new area of occurrence of the specie in the hydrographic basin Quinoá stream. (Figure by Ronaldo Souza da Silva).

Figure 3 in Histological biomarkers and biometric data on trahira Hoplias malabaricus (Pisces, Characiformes, Erythrinidae): a bioindicator species in the Mearim river, Brazilian Amazon

Figure 3. Values of Bernet et al. (1999) index and Poleksic and Mitrovic-Tutundzic (1994) (HAI), in the dry and rainy seasons.

Figure 2 in Histological biomarkers and biometric data on trahira Hoplias malabaricus (Pisces, Characiformes, Erythrinidae): a bioindicator species in the Mearim river, Brazilian Amazon

Figure 2. Histological lesions in H. malabaricus. (A) Normal gill tissue; (B) aneurysm (arrow); (C) epithelial displacement (arrow); and (D) congestion (arrow).

Figure 1 in Histological biomarkers and biometric data on trahira Hoplias malabaricus (Pisces, Characiformes, Erythrinidae): a bioindicator species in the Mearim river, Brazilian Amazon

Figure 1. Location of the Mearim River stretches in the Baixada Maranhense Environmental Protection Area: Engenho Grande village (A1) and Curral da Igreja village (A2).

Figure 3 in Diversity of cellulolytic and xylanolytic fungi associated with the digestive tract of aquatic insect larvae in streams of the Amazon Forest and Cerrado in Brazil

Figure 3. Percentage of fungal isolates from the DT of Stenochironomus (Diptera: Chironomidae) from trunks in Amazon Forest (A), trunks in Cerrado (B) and leaves in Cerrado (C) producers and non-producers of xylanase (Xyl) and cellulase (CMCase).

Figure 2 in Culex quinquefasciatus predominance during integrated mosquito surveillance in an urban area of the Brazilian Amazon

Figure 2. Nasci Aspirator (A) and a plastic pot (B) with a screen (C) adapted for electric vacuuming. Open pot (D) and pot with a lid (E) in the nozzle of the aspirator.

Figure 2 in Diversity of cellulolytic and xylanolytic fungi associated with the digestive tract of aquatic insect larvae in streams of the Amazon Forest and Cerrado in Brazil

Figure 2. Principal component analysis (PCA) of the physicochemical parameters of the streams sampled in the Amazon Forest - Amazonas (A) and Cerrado - Tocantins (T) in the north of Brazil.

Figure 1 in Diversity of cellulolytic and xylanolytic fungi associated with the digestive tract of aquatic insect larvae in streams of the Amazon Forest and Cerrado in Brazil

Figure 1. Map of the sampling sites of Stenochironomus (Diptera:Chironomidae) in low-order streams in the Adolpho Ducke Forest Reserve in the state of Amazonas (Amazon Forest Biome) and at the Lajeado State Park (LSP) in the state of Tocantins, (Cerrado Biome) Brazil.

Figure 1 in Culex quinquefasciatus predominance during integrated mosquito surveillance in an urban area of the Brazilian Amazon

Figure 1. Map of the study area, Porto Velho city in Rondônia State, Brazil, demonstrating the location of each residence of collect (represented by a black circle).

Figure 3. I in Sexual dimorphism in Kinosternon scorpioides (Linnaeus, 1766) from the Brazilian Amazon

Figure 3. I- Principal Component Analysis/wireframe chart of shape (carapace - A and C; and plastron B and D) and II- Discriminant/ Histogram/wireframe function analysis of shape (carapace - A and C; and plastron B and D) of Kinosternon scorpioides. São Luiz-MA, Brazil, 2019. Legend: medium-gray line, black-variation line, blue-male, red-female.

Figure 2 in Aquatic pollutants are associated with reproductive alterations and genotoxicity in estuarine fish (Sciades herzbergii - Bloch, 1794) from the Amazon Equatorial Coast

Figure 2. Differential Pulse Voltamograms using ECV/CoPc at different concentrations of Acenaphthene and Naphthalene respectively (1) real sample; (2) 0.0383 mg/L and 0.0319 mg/L (0.249 µmol L-1 and 0.249 µmol L-1); (3) 0.0766 mg/L and 0.0637 mg/L (0.497 µmol L-1 and 0.497 µmol L-1); (4) 0.0152 mg/L and 0.0126 mg/L (0.99 µmol L-1 and 0.99 µmol L-1) of buffer solution BR 0.2 mol L-1, pH 2, v = 0.025 V s-1.

Figure 2 in Sexual dimorphism in Kinosternon scorpioides (Linnaeus, 1766) from the Brazilian Amazon

Figure 2. Location of the ladmarks arranged in carapace - A and plastron - B of Kinosternon scorpioides. São Luiz-MA, Brazil, 2018.