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32 results for “Apteronotus”
Figure 7. Apteronotus baniwa, 155 in Brown ghost electric fishes of the Apteronotus leptorhynchus species-group (Ostariophysi, Gymnotiformes); monophyly, major clades, and revision
Figure 7. Apteronotus baniwa, 155 mm total length, male, holotype, AUM 43275; Venezuela, Amazonas, Río Orinoco, 147 km east-south-east of San Fernando de Atabapo, 03°18′23′′N, 66°36′12′′W.
Figure 18. Apteronotus pemon, 165 in Brown ghost electric fishes of the Apteronotus leptorhynchus species-group (Ostariophysi, Gymnotiformes); monophyly, major clades, and revision
Figure 18. Apteronotus pemon, 165 mm total length, female, FMNH 121159; Venezuela, Bolivar, Techiné-meru, tributary of Río Caroni, approximately 05°01′N, 62°03′W.
Figure 14 in Brown ghost electric fishes of the Apteronotus leptorhynchus species-group (Ostariophysi, Gymnotiformes); monophyly, major clades, and revision
Figure 14. Principal components analysis on covariance matrix of log-transformed measurements of Apteronotus leptorhynchus (circles) and Apteronotus macrostomus (squares). Scatter plot of scores on first (PC1) and second (PC2) principal components.
Figure 20. Apteronotus spurrellii, 189 in Brown ghost electric fishes of the Apteronotus leptorhynchus species-group (Ostariophysi, Gymnotiformes); monophyly, major clades, and revision
Figure 20. Apteronotus spurrellii, 189 mm total length, syntype, BMNH 1914.5.18:90-3; Colombia, Choco.
Figure 17. Apteronotus pemon, 206 in Brown ghost electric fishes of the Apteronotus leptorhynchus species-group (Ostariophysi, Gymnotiformes); monophyly, major clades, and revision
Figure 17. Apteronotus pemon, 206 mm total length, male, holotype, FMNH 70012; Venezuela, Bolivar, Techiné-meru waterfall, tributary of Río Caroni, approximately 05°01′N, 62°03′W.
Fig. 16. a. Apteronotus acidops, NUP 1750, 240.0 in Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated
Fig. 16. a. Apteronotus acidops, NUP 1750, 240.0 mm TL, Itaipu Reservoir, Guaíra, State of Paraná. b. Apteronotus aff. albifrons, 100.0 mm TL, uncat. c. Apteronotus cf. caudimaculosus, 260.0 mm TL, uncat. d. Apteronotus ellisi, 128.2 mm TL, uncat. e. Sternarchorhynchus britskii, 212.0 mm TL, uncat. f. Gymnotus inaequilabiatus, 238.0 mm TL, uncat. g. Gymnotus pantanal, NUP 13328, 138.6 mm SL, ribeirão Jacutinga, São Jorge do Ivaí, State of Paraná. h. Gymnotus paraguensis, 250.0 mm TL, uncat. i. Gymnotus sylvius, MZUSP 83538, paratype, 260.0 mm TL, rio Ribeira de Iguape, next to Miracatu, Miracatu, State of São Paulo.
FIGURE 2. Apteronotus mariae, CAS 62345, 274.5 in Redescription of Apteronotus mariae (Eigenmann & Fisher, 1914) and the taxonomic status of Apteronotus jurubidae (Fowler, 1944) (Gymnotiformes: Apteronotidae)
FIGURE 2. Apteronotus mariae, CAS 62345, 274.5 mm TL, lower jaw, lateral view, left side.
FIGURE 1 in Redescription of Apteronotus mariae (Eigenmann & Fisher, 1914) and the taxonomic status of Apteronotus jurubidae (Fowler, 1944) (Gymnotiformes: Apteronotidae)
FIGURE 1. Lateral and dorsal views of paratype of Apteronotus mariae, CAS 62345.
FIGURE 4 in Redescription of Apteronotus mariae (Eigenmann & Fisher, 1914) and the taxonomic status of Apteronotus jurubidae (Fowler, 1944) (Gymnotiformes: Apteronotidae)
FIGURE 4. Lateral view of anterior portion of Apteronotus jurubidae, ANSP 71435.
Fig. 4 in On Apteronotus magdalenensis (Miles, 1945) (Gymnotiformes: Apteronotidae): a poorly known species endemic to the río Magdalena basin, Colombia
Fig. 4. Electric Organ Discharge (EOD) waveform (left) and Power Spectral Density (PSD) (right) of Apteronotus magdalenensis. (a): IAvH-P 9836, WC 2005-09-27-01, male, 360 mm TL, Nikolsky gonad stage 4 (fully mature). (b): IAvH-P 7026, WC 2005-09- 27-03, female, 326 mm TL, Nikolsky gonad stage 4 (fully mature). Waveforms are plotted head-positivity upwards, time on abscissa (scale bar = 1 ms), voltage on ordinate, horizontal dashed line = 0 volts. PSD were computed by 65536=point fast Fourier transform from 3s digital recordings. Amplitude on ordinate is scaled so that the peak power frequency is 0dB.
Figure 1 in Brown ghost electric fishes of the Apteronotus leptorhynchus species-group (Ostariophysi, Gymnotiformes); monophyly, major clades, and revision
Figure 1. Cleared and stained dentary of Apteronotus albifrons, 114 mm total length, MCZ 52011. Left side, inverted, medial view, anterior to left, showing all teeth of approximately same size.
Figure 9. Apteronotus ferrarisi, 231 in Brown ghost electric fishes of the Apteronotus leptorhynchus species-group (Ostariophysi, Gymnotiformes); monophyly, major clades, and revision
Figure 9. Apteronotus ferrarisi, 231 mm total length, male, holotype, MCNG 55635; Venezuela, Yaracuy, Río Yaracuy basin, Quebrada Guaquira on Hacienda Guaquira, south-east of El Peñon Reservoir, 10°17′40″N, 68°39′35″W.
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