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215 results for “characids”
Fig. 4 in Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)
Fig. 4. Transversal cross-section of the lateral portion of lower lip from an individual of Salminus brasiliensis, (a) with typical lip and (b) with dermal lip protuberance. EP = epidermis, SS = stratum spongiosum, LE = lateral edge, arrow indicates the lateral lobe of the dermal lip protuberance. Scale bar = 0.25 mm.
Fig. 2 in Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)
Fig. 2. Measurements taken in the lower jaw of S. brasiliensis. LW: Median lip width, MLW: Maximum lip with.
Fig. 4 in A redescription of Astyanax gymnodontus (Eigenmann, 1911), new combination, a polymorphic characid fish from the rio Iguaçu basin, Brazil
Fig. 4. Astyanax gymnodontus, (a) "Astyanax sp. F" morphotype NUP 4122, 92.3 mm SL, Salto Santiago Reservoir; (b) "Psalidodon sp." morphotype NUP 3707, 110.6 mm SL, Jordão Reservoir; and (c) "P. gymnodontus" morphotype NUP 4062, 91.0 mm SL, rio Jordão.
Fig. 1 in Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae)
Fig. 1. Map showing the location of Salado River in Santa Fe Province (Argentina) (left) and inset showing the study region (right). Shaded sectors indicate floodplain areas containing the sampled lakes.
Fig. 2. Astyanax xavante, ICLMA 503, 35.0 in Astyanax xavante, a new species of characid from middle rio Araguaia in the Cerrado region, Central Brazil (Characiformes: Characidae)
Fig. 2. Astyanax xavante, ICLMA 503, 35.0 mm SL, non-type, lateral view of left side of upper and lower jaw teeth, scale = 5 mm (DEN: dentary; MX: maxilla; PMX: premaxilla).
Fig. 1. Astyanax xavante, MZUSP 100375, 57.3 in Astyanax xavante, a new species of characid from middle rio Araguaia in the Cerrado region, Central Brazil (Characiformes: Characidae)
Fig. 1. Astyanax xavante, MZUSP 100375, 57.3 mm SL, holotype, from creek tributary of the córrego Avoadeira, rio Araguaia basin (approx. 15o53'S 52o15'W), Barra do Garças, Mato Grosso, Brazil.
Fig. 6 in Astyanax vermilion and Astyanax burgerai: new characid fishes (Ostariophysi: Characiformes) from Northeastern Bahia, Brazil
Fig. 6. Astyanax burgerai, new species, holotype, male, MZUSP 101245, 53.2 mm SL, Brazil, Bahia State, Almadina, córrego Água Boa, rio Almada drainage.
Fig. 1 in Astyanax vermilion and Astyanax burgerai: new characid fishes (Ostariophysi: Characiformes) from Northeastern Bahia, Brazil
Fig. 1. Astyanax vermilion, new species, holotype, male, MZUSP 101243, 39.4 mm SL, Brazil, Bahia State, Floresta Azul, rio Cachoeira drainage.
Fig. 1. Hyphessobrycon hexastichos, MCP 37648 in A new characid fish, Hyphessobrycon hexastichos (Characiformes: Characidae) from Chapada dos Parecis, Mato Grosso, Brazil
Fig. 1. Hyphessobrycon hexastichos, MCP 37648, holotype, 53.2 mm SL; Brazil, Mato Grosso, Comodoro, rio Mutum, tributary of rio Juruena, upper rio Tapajós drainage.
Fig. 1 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 1. Geographic distribution of the material examined (stars): (1) Astyanax totae sp. n., rio Tortuoso basin, upper rio Iguaçu basin; (2) Astyanax sp. D, upper rio Iguaçu drainages; (3) Astyanax sp. F, rio da Várzea, rio Iguaçu basin; (4) Astyanax janeiroensis, rio Ribeira basin; (5) Astyanax aff. scabripinnis, rio Morato, coastal drainage of southeastern Brazil; (6) Astyanax sp., rio Tibagi, upper rio Paraná system.
Fig. 5 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 5. Anova box-whisker plots of the Orbital diameter as a percentage of Head Length in Astyanax totae, A. cremnobates and A. brachypterygium. Significant differences using oneway analysis of variance test were found among the species (F=46.83, P<0.001). Mean represented by squares, and confidence intervals (95%) as lateral bars of box-whisker plots. Asterisks represent extreme values.
Fig. 4 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 4. Orbital diameter as function of Head Length in Astyanax totae, A. cremnobates and A. brachypterygium. Note that the confidence intervals (95%) do not overlap in A. totae and A. brachypterygium, indicating significant difference. In head lengths of about 8 to 21 mm the 95% confidence intervals do not overlap in A. totae and A. cremnobates, indicating a significant difference in these size ranges.
Fig. 3. Astyanax totae, MHNCI 11248, 56.3 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 3. Astyanax totae, MHNCI 11248, 56.3 mm SL. Maxilla (top-left), premaxilla (top-right) and lower jaw (bottom); lateral view; right side; scale 1.0 mm.
Fig. 2 in Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil
Fig. 2. Astyanax totae, holotype, MHNCI 10305, 61.1 mm SL, rio Cascata, tributary of rio Tortuoso, an affluent of the rio Iguaçu.
Fig. 4 in Myxiops aphos, new characid genus and species (Characiformes: Characidae) from the rio Lençóis, Bahia, Brazil
Fig. 4. Infraorbitals and antorbital of Myxiops aphos, MZUSP 81025, 46.4 mm SL; (a) left side, anterior to left, and (b) right side, anterior to right; lateral view. Scale bar 1 mm.
Fig. 5 in Myxiops aphos, new characid genus and species (Characiformes: Characidae) from the rio Lençóis, Bahia, Brazil
Fig. 5. Upper and lower jaws of Myxiops aphos, MZUSP 81025, 46.4 mm SL; lateral view, anterior to left. Scale bar 1 mm.
Fig. 6. Vertebrae 5 in Myxiops aphos, new characid genus and species (Characiformes: Characidae) from the rio Lençóis, Bahia, Brazil
Fig. 6. Vertebrae 5 to 8 showing the form of pre- and postzygapophyses, MZUSP 81025, 46.4 mm SL; lateral view, anterior to left. Scale bar 1 mm.
Fig. 3 in Myxiops aphos, new characid genus and species (Characiformes: Characidae) from the rio Lençóis, Bahia, Brazil
Fig. 3. Northeastern Brazil, showing the approximate position of the type locality of Myxiops aphos.
FIGURE 3 in Radiotagging a long-distance migratory characid fish: reproduction after surgery, tag losses, and effects in weight
FIGURE 3 | Fecundity (oocytes by gram of body weight) compared among treatments.
FIGURE 2 in DNA extracted from museum specimens of the 19 century provides a taxonomic resolution on the identity of the characid fish Psalidodon jequitinhonhae (Ostariophysi: Characiformes)
FIGURE 2 | Lectotype of Tetragonopterus rutilus jequitinhonhae, NMW 57760:2, 67.52 mm SL.
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