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Fig. 5 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 5. Ventral views of heads in Leptodoras. a. L. linnelli, MBUCV-V 16602 (SL 157 mm). b. L. nelsoni, MBUCV-V 14769 (SL 135.8 mm). c. L. rogersae, USNM 226307 (SL 180 mm). d. L. acipenserinus, FMNH 92385 (SL 155 mm). e. L. acipenserinus, FMNH 97140 (SL 113.3 mm). f. L. acipenserinus, ANSP 178467 (SL 107.9 mm). g. L. cataniai, ANSP 161532 (SL 142.6 mm). h. L. cf. cataniai Amazon form, ANSP 180925 (SL 194 mm). i. L. cf. cataniai Nanay form, ANSP 178438 (SL 164.2 mm).

Fig. 23 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 23. Leptodoras cf. cataniai Amazon form, ANSP 180925 (SL 194 mm), rio Iça (Amazonas dr.), 1.5 km downstream from Betania, Amazonas, Brazil.

Fig. 9 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 9. Distribution of Leptodoras praelongus (star denotes type locality). Color overlays approximate water conditions as moderate to extreme blackwaters (gray), sediment-rich whitewaters (brown), mixed black/whitewaters (tan) and predominantly clearwaters (blue). Drainage base map by M. Weitzman.

Fig. 1 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 1. Standard terminology for features of barbels and labial structures in Leptodoras. a. Ventral view of head in L. linnelli, ANSP 175883 (SL 94 mm). b. Lateral view of head in L. nelsoni, MCNG 13167 (SL 93 mm).

Fig. 20. Leptodoras nelsoni, paratype ANSP 182200 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 20. Leptodoras nelsoni, paratype ANSP 182200 (SL 162 mm), río Apure (Orinoco dr.), Apure, Venezuela.

Fig. 8 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 8. Leptodoras praelongus, MBUCV-V 25602 (SL 151 mm), río Canucunuma (Orinoco dr.), 40 km upstream from the mouth, Amazonas, Venezuela.

Fig. 22 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 22. Leptodoras cataniai, holotype, ANSP 180918 (SL 171 mm), río Casiquiare (Negro dr.) from mouth of rio Pamoni to 4 km below mouth, Amazonas, Venezuela.

Fig. 18 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 18. Juvenile and subadult Leptodoras (Amazon basin). a. L. acipenserinus, FMNH 97140 (SL 113.3 mm), río Coca (Napo dr.), Napo, Ecuador. b. L. acipenserinus, ANSP 178467 (SL 107.9 mm), río Nanay, Loreto, Peru. c. L. cf. cataniai Nanay form, INHS 39814 (SL 109.2 mm), río Nanay, Loreto, Peru. d. L. cf. cataniai Amazon form, ANSP 180925 (SL 120.3 mm), rio Iça, Amazonas, Brazil. e. L. cataniai, ANSP 180912 (SL 104.6 mm), rio Negro, Amazonas, Brazil.

Fig. 15 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 15. Juvenile and subadult Leptodoras (Orinoco and Essequibo basins). a. L. linnelli, ANSP 175881 (SL 100.1 mm), Essequibo river, Guyana. b. L. linnelli, MBUCV-V 19689 (SL 100.5 mm), río Mavaca (Orinoco dr.), Amazonas, Venezuela. c. L. rogersae, paratype, MBUCV-V 13372 (SL 128.8 mm), río Orinoco, Delta Amacuro, Venezuela. d. L. nelsoni, paratype, MBUCV-V 14769 (SL 104.5 mm), río Apure, Apure, Venezuela.

Fig. 11 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 11. Distributions of Leptodoras copei (solid circles, star denotes type locality) and L. cf. copei (open circles).

Fig. 14. Leptodoras linnelli, BMNH 1911.10.31 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 14. Leptodoras linnelli, BMNH 1911.10.31:73-74 (SL 162.2 mm, paratype), Potaro river (Essequibo dr.) Tumatumari, Guyana.

Fig. 26. Leptodoras juruensis, ANSP 180930 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 26. Leptodoras juruensis, ANSP 180930 (SL 149 mm), rio Solimões (Amazonas dr.), 14 km upstream from Nova Tonantins, Amazonas, Brazil.

Fig. 19 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 19. Live coloration in Leptodoras. a. L. acipenserinus, ANSP 178467 (SL 108 mm), río Nanay (Amazonas dr.), near Iquitos, Loreto, Peru. b. L. cf. cataniai Nanay form, ANSP 179863 (SL 144 mm), ibid. c. L. myersi, ANSP 181045 (SL 78.6 mm), río Amazonas, near Iquitos, Loreto, Peru.

Fig. 25 in Taxonomic assessment of Leptodoras (Siluriformes: Doradidae) with descriptions of three new species

Fig. 25. Distributions of Leptodoras cataniai (solid light blue circles, star denotes type locality), L. cf. cataniai Amazon form (solid dark blue circles) and L. cf. cataniai Nanay form (open circles).

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Fig. 1 in Cytogenetical analyses in three fish species of the genus Pimelodus (Siluriformes: Pimelodidae) from rio São Francisco: considerations about the karyotypical evolution in the genus

Fig. 1. Karyotypes of: a) P. fur, b) P. maculatus, and c) Pimelodus sp. arranged from Giemsa-stained. Ag-NOR-bearing pair is framed.

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Fig. 2 in Cytogenetical analyses in three fish species of the genus Pimelodus (Siluriformes: Pimelodidae) from rio São Francisco: considerations about the karyotypical evolution in the genus

Fig. 2. Somatic chromosome metaphases of P. fur (a, d), P. maculatus (b, e) and Pimelodus sp. (c, f) submitted to: C banding (a, b, c) and staining with CMA (d, e, f). The major arrows indicate the NOR-bearing pairs. NOR association (b, f) and NOR size 3 heteromorphism (a) are exemplified. The arrows indicate positive chromosome regions corresponding with heterochromatin sites after treatment with fluorochrome and the arrowheads indicate a pair of metacentric chromosomes with both telomeres heterochromatic.

Fig. 6 in Diet and dental development of three species of Roeboides (Characiformes: Characidae)

Fig. 6. Dental development of Roeboides microlepis at different SL sizes: a = 4.0 cm; b = 6.5 cm; c = 11.5 cm; d = 14.5 cm; e = 18.0 cm.

Fig. 2 in Diet and dental development of three species of Roeboides (Characiformes: Characidae)

Fig. 2. Volumetric proportion of the food items in the diet of Roeboides species. (n=number of analyzed stomachs).

Fig. 3 in Diet and dental development of three species of Roeboides (Characiformes: Characidae)

Fig. 3. Volumetric proportion of food items in the diet of different size classes of Roeboides species.

Fig. 4 in Diet and dental development of three species of Roeboides (Characiformes: Characidae)

Fig. 4. Dental development of Roeboides paranensis at different SL sizes: a = 2.6 cm; b = 3.7 cm; c = 6.2 cm.