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Fig. 3 in Effects of extended absence of flooding on the fish assemblages of three floodplain lagoons in the middle São Francisco River, Brazil

Fig. 3. Catch per unit of effort in number of individuals (CPUEn) in the 'Curral-de-Vara' and 'Cajueiro' lagoons of the middle São Francisco River, Brazil, from September 1994 to March 1996 (dot = mean; whiskers = maximum and minimum).

Fig. 5 in Effects of extended absence of flooding on the fish assemblages of three floodplain lagoons in the middle São Francisco River, Brazil

Fig. 5. São Francisco River flow at the town of Manga, State of Minas Gerais, during the last 20 years before 2003, including the period of study.

Fig. 4 in Effects of extended absence of flooding on the fish assemblages of three floodplain lagoons in the middle São Francisco River, Brazil

Fig. 4. Catch per unit of effort in biomass (CPUEb) in the 'Curral-de-Vara' and 'Cajueiro' lagoons of the middle São Francisco River, Brazil, from September 1994 to March 1996 (dot = mean; whiskers = maximum and minimum). Different letters above columns indicate significant differences.

Fig. 2 in Effects of extended absence of flooding on the fish assemblages of three floodplain lagoons in the middle São Francisco River, Brazil

Fig. 2. Fish richness in the marginal lagoons of the middle São Francisco River, Brazil, from September 1994 to March 1996.

Fig. 1 in Effects of the proximity from an industrial plant on fish assemblages in the rio Paraíba do Sul, southeastern Brazil

Fig. 1. Study area, rio Paraíba do Sul reaches. Indication of the six sampling sites and three zones - Z I (sites 1 and 2); Z II (sites: 3 and 4); and Z III (sites 5 and 6). Buffers marked in black indicate main sources of urban and industrial pollution. Dams indicated by black line marks.

Fig. 6 in Effects of the proximity from an industrial plant on fish assemblages in the rio Paraíba do Sul, southeastern Brazil

Fig. 6. Cluster analysis of fish abundance on mode Q, showing the three zones in the Paraíba do Sul river, in 1998/99. In x-axis = 1: Z I; 2: Z II; 3: Z III.

Fig. 5 in Effects of the proximity from an industrial plant on fish assemblages in the rio Paraíba do Sul, southeastern Brazil

Fig. 5. Cluster analysis of fish abundance on mode Q, showing the three zones in the Paraíba do Sul river, in 1997/98. In x-axis = 1: Z I; 2: Z II; 3: Z III.

Fig. 4 in Effects of the proximity from an industrial plant on fish assemblages in the rio Paraíba do Sul, southeastern Brazil

Fig. 4. Number of species per geometric classes (x 2) in the three zones of the rio Paraíba do Sul, in 1997/99.

Fig. 2 in Effects of the proximity from an industrial plant on fish assemblages in the rio Paraíba do Sul, southeastern Brazil

Fig. 2. ABC curves for fish species in the three zones of the rio Paraíba do Sul, in 1997/99. Round marks - abundance; triangle marks - biomass. ABC-indexes indicated for each zone.

Fig. 3. K in Effects of the proximity from an industrial plant on fish assemblages in the rio Paraíba do Sul, southeastern Brazil

Fig. 3. K-dominance curves for the fish species in the three zones of the rio Paraíba do Sul, in 1997/99.

Fig. 8 in Testing the ecomorphological hypothesis in a headwater riffles fish assemblage of the rio São Francisco, southeastern Brazil

Fig. 8. Cladogram of traditionally accepted phylogenetic relationships among Loricariidae subfamilies (modified from de Pinna, 1988: 304), showing the phylogenetic position of the studied loricariid species, an example of ecomorphological adaptive divergence in the studied riffles. According to Armbruster (2004), Ancistrinae is currently considered a distinct tribe within Hypostominae.

Fig. 7 in Testing the ecomorphological hypothesis in a headwater riffles fish assemblage of the rio São Francisco, southeastern Brazil

Fig. 7. Imparfinis minutus specimen sheltering itself from current among rocks in the riffles bottom, during daytime (photo: Ricardo M.C. Castro).

Fig. 5 in Testing the ecomorphological hypothesis in a headwater riffles fish assemblage of the rio São Francisco, southeastern Brazil

Fig. 5. Characidium zebra specimen using its expanded and horizontally orientated paired fins to hold its position against the current in the riffles substrate, during daytime (photo: Ricardo M.C. Castro).

Fig. 4 in Testing the ecomorphological hypothesis in a headwater riffles fish assemblage of the rio São Francisco, southeastern Brazil

Fig. 4. Cladogram of phylogenetic relationships among selected characiform fishes (modified from Buckup, 1998: 134), showing the phylogenetic position of the studied Characidiinae and Parodontidae species, an example of ecomorphological adaptive convergence in the studied riffles.

Fig. 3 in Testing the ecomorphological hypothesis in a headwater riffles fish assemblage of the rio São Francisco, southeastern Brazil

Fig. 3. Dendrogram of ecomorphological relationships of the 14 resident fish species in the upper rio São Francisco studied riffles, southeastern Brazil.

Fig. 2 in Testing the ecomorphological hypothesis in a headwater riffles fish assemblage of the rio São Francisco, southeastern Brazil

Fig. 2. Projection of the two first principal components of the 14 resident fish species in the upper rio São Francisco studied riffles, southeastern Brazil: Astriv, Astyanax rivularis; Brystr, Bryconamericus stramineus; Brysp, Bryconamericus sp.; Chafas, Characidium fasciatum; Chazeb, Characidium zebra; Apaibi, Apareiodon ibitiensis; Parhil, Parodon hilarii; Cetihe, Cetopsorhamdia iheringi; Impmin, Imparfinis minutus; Rhaque, Rhamdia quelen; Trisp, Trichomycterus sp.; Hissp, Hisonotus sp.; Hypgar, Hypostomus garmani; Harsp, Harttia sp.

Fig. 1 in Testing the ecomorphological hypothesis in a headwater riffles fish assemblage of the rio São Francisco, southeastern Brazil

Fig. 1. General view of the studied riffle stretch (20º30'S 46º50'W) in the upper rio São Francisco, southeastern Brazil (photo: Ricardo M.C. Castro).

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Fig. 3 in A remarkable sand-dwelling fish assemblage from central Amazonia, with comments on the evolution of psammophily in South American freshwater fishes

Fig. 3. The sit-and-wait foraging posture of "Imparfinis" pristos in dorsal view. Note translucent body and commashaped pupil.

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Fig. 2 in A remarkable sand-dwelling fish assemblage from central Amazonia, with comments on the evolution of psammophily in South American freshwater fishes

Fig. 2. The sit-and-wait foraging posture of Mastiglanis asopos in posterior view. Note very long barbels and filamentous rays of pectoral fins spread in a drift trap-like device, as well as the alignment of mentonian barbels and pectoral filaments.