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Fig. 3 in New and previously known ectoparasitic monogenoids (Platyhelminthes) on native and non-native fishes from tributaries of the Usumacinta River basin (southern Mexico), a Neotropical transition zone

Fig. 3. Haptoral and copulatory complex sclerites of Heteropriapulus heterotylioides n. sp. on Pterygoplichthys pardalis (Loricariidae) from the Usumacinta river basin (southern Mexico). A, B, and C – copulatory complexes (A and C in dorsal view; B in ventral view); D – ventral anchor; E – hook; F, G and H – dorsal anchors; I and J – ventral bars; K and L – dorsal bars; M – vaginal tube.

Fig. 2. Heteropriapulus simplexioides n in New and previously known ectoparasitic monogenoids (Platyhelminthes) on native and non-native fishes from tributaries of the Usumacinta River basin (southern Mexico), a Neotropical transition zone

Fig. 2. Heteropriapulus simplexioides n. sp. on Pterygoplichthys pardalis (Loricariidae) from the Usumacinta river basin (southern Mexico). A – whole mount (composite, ventral view); B, C, and E – copulatory complexes; D – ventral anchor; F – dorsal anchor; G – hook; H – dorsal bar; I – ventral bar.

Fig. 4 in Effects of river damming in Neotropical piscivorous and omnivorous fish: feeding, body condition and abundances

Fig. 4. Repletion Index (righ) and condition factor (left) of the analysed species from Iguaçu River in the Salto Caxias Reservoir influence, before and after damming and sites (RE - reservoir region; DO - downstream; UP - upstream from the Iguaçu River; TL - tributaries lower section; TU - tributaries upper section). Vertical bars= standard error.

Fig. 3 in Effects of river damming in Neotropical piscivorous and omnivorous fish: feeding, body condition and abundances

Fig. 3. Piscivory (%) and mean condition factor of the analysed species from Iguaçu River in the Salto Caxias Reservoir influence, before and after damming and sites (RE - reservoir region; DO - downstream; UP - upstream from the Iguaçu River; TL - tributaries lower section; TU - tributaries upper section). Vertical bars= standard error.

Fig. 2 in Effects of river damming in Neotropical piscivorous and omnivorous fish: feeding, body condition and abundances

Fig. 2. Median abundance (Capture per unit effort - CPUE; unit: number of individuals/1,000 m² of nets set for 24 h) of the most consumed prey and analysed species from Iguaçu River in the Salto Caxias Reservoir area of influence, before and after damming (RE - reservoir region; DO - downstream; UP - upstream from the Iguaçu River; TL - tributaries lower section; TU - tributaries upper section). Vertical bars=Min and Max values.

Fig. 1 in Effects of river damming in Neotropical piscivorous and omnivorous fish: feeding, body condition and abundances

Fig. 1. Location of the sample stations in the Iguaçu River and the dam influence area. a) Before damming. b) After damming. [Point 1-2 = upstream from the Iguaçu river (UP); point 3 = reservoir region (RE); point 4 = downstream (DO); 5-9 = tributaries low section (TL); 10-14= tributaries upper section (TU)].

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Fig. 2 in The dawn of phylogenetic research on Neotropical fishes: a commentary and introduction to Baskin (1973), with an overview of past progress on trichomycterid phylogenetics

Fig. 2. From left to right: Naércio Menezes, Jonathan Baskin, Paulo Vanzolini, Almenor Tacla and Hans Reichardt at entrance of Museu de Zoologia da Universidade de São Paulo, São Paulo, in 1963.

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Fig. 4 in Effect of anesthetic, tag size, and surgeon experience on postsurgical recovering after implantation of electronic tags in a neotropical fish: Prochilodus lineatus (Valenciennes, 1837) (Characiformes: Prochilodontidae)

Fig. 4. Effect of incision size (cm) and duration of surgery (s) on wound area (cm2) one week after surgical implantation of telemetry transmitters in Prochilodus lineatus.

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Fig. 5 in Effect of anesthetic, tag size, and surgeon experience on postsurgical recovering after implantation of electronic tags in a neotropical fish: Prochilodus lineatus (Valenciennes, 1837) (Characiformes: Prochilodontidae)

Fig. 5. Surgical/postsurgical ranking of Prochilodus lineatus over four weeks. Black: poor; gray: average; and light gray: good.

FIGURE 61 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 61 | Rhamphichthys rostratus, ANSP 182428, 445 mm LEA, fisherman catch purchased from canoe in Belen, Iquitos, reportedly from Lower Río Itaya, Loreto, Peru.

FIGURE 62 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 62 | Detail of the head of Rhamphichthys rostratus, ANSP 182428, 445 mm LEA, fisherman catch purchased from canoe in Belen, Iquitos, reportedly from lower Río Itaya, Loreto, Peru.

FIGURE 54 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 54 | Rhamphichthys rostratus, holotype of Rhamphichthys blochii, ZMB 4089, 510 mm LEA, South America.

FIGURE 58 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 58 | Detail of the head of Rhamphichthys rostratus, holotype of Rhamphichthys schneideri MNHN 3957, 700 mm LEA, Cayenne, French Guiana.

FIGURE 53 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 53 | Rhamphichthys rostratus, holotype of Rhamphichthys blochii, ZMB 4089, 510 mm LEA, South America.

FIGURE 49 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 49 | Linear regression of Rhamphichthys pantherinus populations. Blue circles = Amazon Basin (open circle = holotype of R. pantherinus); red circles = Mearim System (open circle = holotype of R. atlanticus); black circles = Trombetas basin (open circle = holotype of R. longior).

FIGURE 46 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 46 | Fry of Rhamphichthys pantherinus FMNH 103361, 28 mm LEA tributary to Río Cuyabeno about 3 km upstream Laguna Grande, Napo, Ecuador.

FIGURE 40 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 40 | Rhamphichthys pantherinus, ANSP 182785, 410 mm LEA, Río Manapiare at mouth of Caño Yutaje 14 km NW of San Juan de Manapiare, Amazonas, Venezuela.

FIGURE 42 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 42 | Rhamphichthys pantherinus, holotype of Rhamphichthys atlanticus, MZUSP 43612, 690 LEA, lago Viana tributary to Pindare-Mearim System, Maranhão, Brazil.

FIGURE 39 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 39 | Detail of the head of holotype of Rhamphichthys marmoratus, MNHN 3959, rio Araguaia, Brazil.

FIGURE 45 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)

FIGURE 45 | Detail of the head of Rhamphichthys pantherinus, holotype of Rhamphichthys longior, MZUSP 48507, 850 mm LEA, lago Paru at confluence of rio Trombetas and rio Paru-do-Oeste, Pará, Brazil.