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Fig. 1 in A new species of Roeboides (Teleostei: Characidae) from Costa Rica and Panama, with a key to the middle American species of the genus

Fig. 1. Distribution of Roeboides bussingi. Holotype indicated by the star, circles represent paratypes.

Fig. 3 in A new species of Roeboides (Teleostei: Characidae) from Costa Rica and Panama, with a key to the middle American species of the genus

Fig. 3. (a) Anterior portion of the anal fin of Roeboides bussingi (LSUMZ 14797, 79.0 mm SL; paratype) showing concentration of melanophores forming a dark band at the edge of the fin. (b) Same region of anal fin of R. bouchellei (LSUMZ 14798, 72.2 mm SL) showing scattered melanophores, without a distinctive dark band. (c) Caudal region of R. bussingi showing the teardrop-shaped spot that extends onto the caudal fin. (d) Caudal region of R. bouchellei showing a lighter and triangleshaped spot, largely restricted to the caudal peduncle. Also note the densely distributed melanophores on the body of R. bussingi and the lighter body coloration and fewer melanophores in R. bouchellei.

Fig. 2 in A new species of Roeboides (Teleostei: Characidae) from Costa Rica and Panama, with a key to the middle American species of the genus

Fig. 2. Photographs of (a) Roeboides bussingi (LSUMZ 14629; 69.2 mm SL) depicting live coloration, and (b) preserved holotype (LSUMZ 14799; 74.9 mm SL).

Fig. 2 in Resource use by the facultative lepidophage Roeboides affinis (Günther, 1868): a comparison of size classes, seasons and environment types related to impoundment

Fig. 2. Medians of percentage volume of scales consumed by Roeboides affinis in the upper Tocantins river, from 1995 to 2000, in: (a) different environmental types (Lotic, n = 38, vs. Lentic, n = 52); (b) seasons (Dry, n = 25, vs. Wet, n = 68); (c) size classes 1 (n = 12), 2 (n = 38), 3 (n = 26), 4 (n = 9) and 5 (n = 5) and (d) different post-impoundment phases (Filling, n = 9, vs. Operation, n = 2) in lentic sites.

Fig. 1 in Resource use by the facultative lepidophage Roeboides affinis (Günther, 1868): a comparison of size classes, seasons and environment types related to impoundment

Fig. 1. CA ordination of 155 individuals of Roeboides affinis of two groups formed by five size classes (Group1, n = 33, and Group 2, n = 22) according to the consumption of food items (volumetric proportions) in the upper Tocantins River in two environment types (Lotic, n = 61, vs. Lentic, n = 94) related to its impoundment by the Serra da Mesa Hydroelectric Dam, from 1995 to 2000.

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.

Fig. 5 in Diet and dental development of three species of Roeboides (Characiformes: Characidae)

Fig. 5. Dental development of Roeboides prognathus at different SL sizes: a = 3.7 cm; b = 7.0 cm; c = 11.0 cm.