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Fig. 9 in Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

Fig. 9. Sexual dimorphism in Corydoras froehlichi, showing (a) the slender and more elongated pelvic fin on males, MCP 12945, 42.4 mm SL, paratype, and (b) the shorter and rounded pelvic fin on females, MCP 12945, 44.4 mm SL, paratype. Scale bar = 1.0 mm.

Fig. 4 in Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

Fig. 4. Pectoral-fin spine of cleared-and-stained specimens of (a) Corydoras paleatus, UFRGS 1722, 37.6 mm SL, and (b) Corydoras froehlichi, MCP 13388, 40.2 mm SL, paratype. Scale bar = 1.0 mm.

Fig. 5 in Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

Fig. 5. Uncatalogued live specimen of Corydoras paleatus with approximately 43.0 mm SL, from the Laguna del Diario, Maldonado, Uruguay. Photo by Hans-Georg Evers.

Fig. 3 in Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

Fig. 3. Lateral view of the head of cleared-and-stained specimens of (a) Corydoras paleatus, UFRGS 1722, 37.6 mm SL, and (b) Corydoras froehlichi, MCP 13388, 40.2 mm SL, paratype. Abbreviations: io1: infraorbital 1, io2: infraorbital 2, sph: sphenotic, cpt: compound pterotic. Scale bar = 1.0 mm.

Fig. 1 in Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

Fig. 1. Lectotype of Callichthys paleatus, BMNH 1917.7.14.18, 1, 31.0 mm SL, uncertain locality, collected by Charles Darwin between the years of 1832-1836. Lateral, dorsal and ventral views. Photo by Mark Allen, copyright Natural History Museum, London.

Fig. 2 in Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

Fig. 2. Specimen of Corydoras paleatus, NRM 54230, 1, 53.5 mm SL, captured in córrego Sarandí, Canelones, Uruguay, near to the most plausible type-locality of C. paleatus, the Laguna del Diario, in Maldonado. Dorsal, lateral and ventral views. Photo by Celso Ikedo.

Fig.1 in Parasites of two coexisting invasive sailfin catfishes (Siluriformes: Loricariidae) in a tropical region of Mexico

Fig.1. Intra-annual variations in: a) prevalence, b) intensity of infection and c) abundance of parasites in the invasive loricarids Pterygoplichthys disjunctivus and P. pardalis from a freshwater ecosystem of southeastern Mexico.

FIGURE 6 in A new species of armored catfish of the genus Scobinancistrus (Loricariidae: Hypostominae) from the Xingu River basin, Brazil

FIGURE 6 | Underwater photography at the exact same locality in Gorgulho da Rita. Above, October 2015, showing a rapids' habitat with high tridimensional complexity occupied by several species of fish (on the picture: Teleocichla preta, Leporinus tigrinus, Hypomasticus julii). Below, October 2017, same spot after Belo Monte Dam implementation showing that the absence of current promoted siltation and the disappearance of rheophilic species from the area. Photos: Leandro M. Sousa

FIGURE 5 in A new species of armored catfish of the genus Scobinancistrus (Loricariidae: Hypostominae) from the Xingu River basin, Brazil

FIGURE 5 | Scobinancistrus raonii hiding underneath its preferred microhabitat: conglomerate plates of gravel and iron oxide. Photo: Leandro M. Sousa.

FIGURE 4 in A new species of armored catfish of the genus Scobinancistrus (Loricariidae: Hypostominae) from the Xingu River basin, Brazil

FIGURE 4 | Partial map of the Xingu River, showing the distribution of Scobinancistrus raonii (yellow circles). Black circle indicates type locality. Shaded area indicates the Impact Zone of the Belo Monte Dam Complex. Dark blue stretch of the river represents the dammed area. Red stretch indicates the reduced flow impacted area.

FIGURE 3 in A new species of armored catfish of the genus Scobinancistrus (Loricariidae: Hypostominae) from the Xingu River basin, Brazil

FIGURE 3 | Photo in ventral view of the mouth of Scobinancistrus raonii, INPA 40512, paratype, 80.9 mm SL. Photo: Leandro M. Sousa.

FIGURE 2 in A new species of armored catfish of the genus Scobinancistrus (Loricariidae: Hypostominae) from the Xingu River basin, Brazil

FIGURE 2 | Lateral view of live specimens of Scobinancistrus raonii, Brazil, Pará, Xingu River, Volta Grande do Xingu. Paratypes: INPA 40512, 80.9 mm SL, juvenile (above); LIA 5054, 94.4 mm SL, subadult (middle); ANSP 194989, 120.8 mm SL, adult (below). Photos: Leandro M. Sousa (juvenile and subadult) and Mark H. Sabaj (adult).

FIGURE 1 in A new species of armored catfish of the genus Scobinancistrus (Loricariidae: Hypostominae) from the Xingu River basin, Brazil

FIGURE 1 | Lateral, dorsal and ventral views of Scobinancistrus raonii, INPA 59493, holotype, 99.6 mm SL, Senador José Porfírio, Xingu River, ca. 3.5 km downstream from BR-230. Photo: Leandro M. Sousa.

Fig. 2 in Predicting size at first sexual maturity from length/weight relationship: a case study with an Amazonian catfish

Fig. 2. Length/weight relationship of male Auchenipterichthys longimanus. A and C represent Huxley regular length/weight relationship and its distribution of proportional residuals. B and D represent polyphasic length/weight relationship its and distribution of proportional residuals.

Fig. 1 in Predicting size at first sexual maturity from length/weight relationship: a case study with an Amazonian catfish

Fig. 1. Sampling area in the National Forest of Caxiuanã, Pará State, showing the rivers where the fish were collected; Curuá River - Ferreira Penna Research Station (ECFPn), Caxiuanã River; Puraquequara River and Caquajó River. A single point on the map may represent more than one colleting site.

Fig. 4 in Predicting size at first sexual maturity from length/weight relationship: a case study with an Amazonian catfish

Fig. 4. Frequency of mature individuals as a function of the total length. Female sexual maturity identified by visual inspection of ovarian (A) and G SI values (B). Male sexual maturity identified by visual inspection of testes (C) and G SI values (D).

Fig. 3 in Predicting size at first sexual maturity from length/weight relationship: a case study with an Amazonian catfish

Fig. 3. Length/weight relationship of female Auchenipterichthys longimanus. A and C represent Huxley regular length/ weight relationship and its distribution of proportional residuals. B and D represent polyphasic length/weight relationship its and distribution of proportional residuals.

FIGURE 5 in Late Cenozoic catfishes of Southeastern Europe with inference to their taxonomy and palaeogeography

FIGURE 5. Isolated bones assigned to Silurus glanis Linnaeus, 1758. 1-4, right pectoral-fin spines (NMNHU-P 41/ 609, 621, Shkodova Gora): dorsal view (1), lateral view (2), proximal articulation surface (3), fragment of the shaft with denticulations (4). 5, isolated jaw tooth (NMNHU-P 41/2530, Kotlovina 1), lateral view. 6, fragment of left dentary (NMNHU-P 41/52, Shkodova Gora): dorsal view. 7-8, right articular (NMNHU-P 41/626, Shkodova Gora): lateral view (7), dorsal view (8). 9-10, parasphenoid with basioccipital bone (NMNHU-P 41/717, Shkodova Gora): ventral view (9), dorsal view (10). 11, fragment of quadrate (NMNHU-P 41/623, Shkodova Gora), anterior view on the articular facet. 12, fragment of cleithrum (NMNHU-P 41/615, Shkodova Gora), lateral view. Scale bars equal 20 mm (Figure 5.9-10, 5.12), 10 mm (Figure 5.1-4, 5.6-8, 5.11) and 5 mm (Figure 5.5).

FIGURE 3 in Late Cenozoic catfishes of Southeastern Europe with inference to their taxonomy and palaeogeography

FIGURE 3. Isolated bones assigned to †Silurus spinosus n. sp. 1-5, holotype, left pectoral-fin spine (NMNHU-P 29/ 1747, Popovo 3): dorsal view (1), ventral view (2), medial view (3), lateral view (4), proximal articulation surface (5). 6- 7, distal fragments of pectoral-fin spines (NMNHU-P 29/4034-4035, Lobkovo). 8, medial part of parasphenoid (NMNHU-P 29/1756, Popovo 3), dorsal view. 9, right dentary (NMNHU-P 29/4002, Lobkovo), medial view. 10, symphysal fragment of cleithrum (NMNHU-P 29/1814, Popovo 3), lateral view. 11, articular (NMNHU-P 29/1852, Popovo 3), lateral view. 12, praemaxilla (NMNHU-P 29/1906, Popovo 3), ventral view. 13, articular facet of quadrate (NMNHU-P 29/1911, Popovo 3), anterior view. Scale bars equal 10 mm.

FIGURE 1 in Late Cenozoic catfishes of Southeastern Europe with inference to their taxonomy and palaeogeography

FIGURE 1. Investigated localities with late Miocene, Pliocene and Pleistocene catfish remains. 1, Popovo. 2, Mykhailivka. 3, Lobkovo. 4, Frunzovka. 5, Palievo. 6, Otradovo. 7, Lysa Gora. 8, Kubanka. 9, Novoelizavetovka. 10, Cherevichne. 11, Vasylivka. 12, Verkhnya Krynitsya. 13, Egorovka. 14, Novoukrainka. 15, Pontian lectostratotype. 16, Vinogradovka. 17, Nerubaiske. 18, Trudomirovka. 19, Novopetrovka. 20, Kamenskoe. 21, Kotlovina. 22, Shkodova Gora. 23, Shirokino. 24, Obukhovka. 25, Novokyivka. 26, Semibalka.