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Figure 2. – Invasive Poecilia reticulata. A in On the natural occurrence of Poecilia reticulata Peters, 1859 (Cyprinodontiformes: Poeciliidae)

Figure 2. – Invasive Poecilia reticulata. A: male, CICCAA 02455, 16.4 mm SL; B: Male, CICCAA 02455, 15.7 mm SL; C: Female, CICCAA 02455, 22.3 mm SL.

Figure 1 in On the natural occurrence of Poecilia reticulata Peters, 1859 (Cyprinodontiformes: Poeciliidae)

Figure 1. – Poecilia reticulata, UFRJ 5351, male, 17.9 mm SL. Gonopodium tip, left lateral view. Abbreviations: p, gonopodial palp; 3, ray 3; 4a and 4p, anterior and posterior branches of ray 4; 5a and 5p, anterior and posterior branches of ray 5.

Figure 1. – 3D in On the identity of the West African killifish Aphyosemion maeseni Poll, 1941 (Cyprinodontiformes: Aplocheilidae)

Figure 1. – 3D Microscan reconstruction of the head and anterior portion of the trunk, left lateral view. A: Holotype of Aphyosemion maeseni, MRAC P 66392, male, 37 mm of total length; B: Holotype of Nimbapanchax leucopterygius, MRAC P-66392, male, 55 mm of total length. E3, E4, epineural ribs of vertebrae 3 and 4; N2, N5, neural processes of vertebrae 2 and 5.

Figure 2. – 3D in On the identity of the West African killifish Aphyosemion maeseni Poll, 1941 (Cyprinodontiformes: Aplocheilidae)

Figure 2. – 3D Microscan reconstruction of the head and anterior portion of the trunk, ventral view. A: Holotype of Aphyosemion maeseni, MRAC P 66392, male, 37 mm total length; B: Holotype of Nimbapanchax leucopterygius, MRAC P-66392, male, 55 mm of total length. E2, epineural rib of vertebra 2.

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Fig. 3 in Fig. 3 in Genetic Structure of the Mangrove Killifish Costa, 2011 (Cyprinodontiformes: Aplocheiloidei) Supports A Wide Connection among its Populations.

Fig. 3. Haplotype network of the Kryptolebias marmoratus species group. Maps represent the distribution of each group.

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Fig. 2 in Fig. 3 in Genetic Structure of the Mangrove Killifish Costa, 2011 (Cyprinodontiformes: Aplocheiloidei) Supports A Wide Connection among its Populations.

Fig. 2. Distribution of K. hermaphroditus: Orange star indicates type locality; and Green circles indicate recorded localities for the species (Costa 2011; 2016; Sarmento-Soares et al. 2014; Lira et al. 2015; Berbel-Filho et al. 2016; Guimarães-Costa et al. 2017; Tatarenkov et al. 2017a; This study).

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Fig. 1 in Fig. 3 in Genetic Structure of the Mangrove Killifish Costa, 2011 (Cyprinodontiformes: Aplocheiloidei) Supports A Wide Connection among its Populations.

Fig. 1. Kryptolebias hermaphroditus from Tutóia, Maranhão State, Delta do Parnaíba, north eastern Brazil; UFRJ12666: A: Hermaphrodite, 35.5 mm SL; B: Male, 20.3 mm SL; C: Male, 28.9 mm SL.

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Fig. 1 in Critical thermal limits of Poecilia caucana (Steindachner, 1880) (Cyprinodontiformes: Poeciliidae)

Fig. 1. Thermal tolerance limits of Poecilia caucana. Values represent mean ± SD in critical thermal limits estimated for each acclimation temperature. Letters represent significant differences in the Tukey post-hoc test using α=0.05.

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Fig. 3 in Critical thermal limits of Poecilia caucana (Steindachner, 1880) (Cyprinodontiformes: Poeciliidae)

Fig. 3. Comparison of acclimation capacity for Poecilia caucana (Pc, bold letter and thicker line) and a sample of species with CT and acclimation temperature values available in the literature. Lines join acclimation capacities for CTmin and CT max of the same species, when both values are available. Symbols are jittered in the horizontal axis to avoid crowding. Abbreviations as in Fig. 2 except for Ap = Alosa pseudoharengus (Otto et al., 1976); Cn = Cyprinodon nevadensis (Feldmeth et al., 1974); Cs = Cyprinodon sp. (Otto & Gerking, 1973); Fh = Fundulus heteroclitus (Bulger & Tremaine, 1985); Ga = Gambusia affinis (Otto, 1973, 1974); Oc = Oncorhynchus clarkii (Heath, 1963).

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Fig. 2 in Critical thermal limits of Poecilia caucana (Steindachner, 1880) (Cyprinodontiformes: Poeciliidae)

Fig. 2. Comparison of Critical Thermal (CT) limits for Poecilia caucana (Pc, grey polygon) and a sample of species with CTmin and CT max data available in the literature. Polygons are formed by two vertical lines representing the CT tolerance ranges observed at the lowest and highest acclimation temperatures used in each study. The polygons have an arbitrary width that does not reflect the range of acclimation temperatures used among different studies. The top and bottom lines of each polygon join, respectively, the CT max and CTmin values for each species. Three species (N, Ns, and P) having data for only one acclimation temperature are represented by vertical lines. Pf = Prochilodus scrofa (currently Prochilodus lineatus), fry, and Ps = P. scrofa, adults (Barrionuevo & Fernandes, 1995); Ca = Carassius auratus (Ford & Beitinger, 2005); Cc = Catla catla and Cm = Cirrhinus mrigala (Das et al., 2004); Cp = Cyprinus carpio (Chatterjee et al., 2004); Danio rerio, transgenic breed, and D. rerio, wild (Cortemeglia & Beitinger, 2005); Sb = Siphateles bicolor (McClanhan et al., 1986); Lr = Labeo rohita (Chatterjee et al., 2004; Das et al., 2004); N = Notropis chrysocephalus, Ns = N. spilopterus, P = Pimephales notatus (Hockett & Mundahl, 1989); Ro = Rhinichthys osculus (Kaya et al., 1992); Hb = Horabagrus_brachysoma (Dalvi et al., 2009); Ip = Ictalurus punctatus (Currie et al., 1998); Pp = Pangasius pangasius (Debnath et al., 2006); Om = Oncorhynchus mykiss (Currie et al., 1998); Cv = Cyprinodon variegatus (Bennett & Beitinger, 1997); Pc = Poecilia caucana (this study); Xm = Xiphophorus maculatus (Prodocimo & Freire, 2001); Ms = Micropterus salmoides (Currie et al., 1998).

Fig. 5 in Trophic strategy of Atlantirivulus riograndensis (Cyprinodontiformes: Rivulidae), a non-annual rivulid threatened by extinction, in a perennial environment, Brazil)

Fig. 5. Seasonal distribution of Atlantirivulus riograndensis by frequency of standard length (SL). Individuals collected at the Banhado dos Pachecos wildlife refuge, Viamão, Rio Grande do Sul, Brazil, in 2012.

Fig. 3 in Trophic strategy of Atlantirivulus riograndensis (Cyprinodontiformes: Rivulidae), a non-annual rivulid threatened by extinction, in a perennial environment, Brazil)

Fig. 3. Index of stomach fullness in relation to standard length. Ontogenetic analysis of the Atlantirivulus riograndensis feeding intensity by sex, collected the Banhado dos Pachecos wildlife refuge, in the city of Viamão, Rio Grande do Sul, Brazil, in 2012.

Fig. 2 in Trophic strategy of Atlantirivulus riograndensis (Cyprinodontiformes: Rivulidae), a non-annual rivulid threatened by extinction, in a perennial environment, Brazil)

Fig. 2. Sampling area of Atlantirivulus riograndensis. Evidence of seasonal modification of landscape at the collection point at Banhado dos Pachecos wildlife refuge, Viamão, Rio Grande do Sul, Brazil, during the year 2012 (a) Summer in March; Autumn in (b) May and (c) in June; (d) Winter in September; Spring in (e) October and (f) November.

Fig. 1 in Trophic strategy of Atlantirivulus riograndensis (Cyprinodontiformes: Rivulidae), a non-annual rivulid threatened by extinction, in a perennial environment, Brazil)

Fig. 1. Geographic location of the capture area of Atlantirivulus riograndensis. Geographical representation of South America, especially (a) Brazilian territory, (b) the state of Rio Grande do Sul and (c) Banhado dos Pachecos wildlife refuge in the city of Viamão, sampling area of Atlantirivulus riograndensis in 2012.

Fig. 4 in Trophic strategy of Atlantirivulus riograndensis (Cyprinodontiformes: Rivulidae), a non-annual rivulid threatened by extinction, in a perennial environment, Brazil)

Fig. 4. Canonical Correspondence Analysis (CCA) of food composition of Atlantirivulus riograndensis representing the importance of seasonal and ontogenetic variables, with p <0:05, according to the length of arrows associated with each vector. Individuals collected at the Banado dos Pachecos wildlife refuge, Viamão, Rio Grande do Sul, Brazil, in 2012. A: ≤ 21.6 mm Standard length; B: Standard length from 21.7 to 32.6 mm; C: Standard length ≥ 32.7 mm.

FIGURE 7 in Redescription of Austrolebias accorsii (Cyprinodontiformes: Rivulidae) and description of a new species of the genus from the upper Paraguay River basin

FIGURE 7 | Austrolebias ayoreode. Females (immediately after collection). Above: MNKP 16590, paratype, 26.1 mm SL; Bolivia, Santa Cruz, Cordillera, Charagua Iyambae Guarani Autonomous Territory, Ñembi Guasu Conservation and Ecological Importance Area. Below: MNKP 16587 (vertically flipped), paratype, female, 38.1 mm SL, collected with MNKP 16590.

FIGURE 4 in Redescription of Austrolebias accorsii (Cyprinodontiformes: Rivulidae) and description of a new species of the genus from the upper Paraguay River basin

FIGURE 4 | Biotope at type-locality of Austrolebias accorsii. Bolivia, Santa Cruz, Cordillera, Charagua Iyambae Guarani Autonomous Territory, 18°39'26.2"S 62°58'00.2"W, 30 April 2021.

FIGURE 8 in Redescription of Austrolebias accorsii (Cyprinodontiformes: Rivulidae) and description of a new species of the genus from the upper Paraguay River basin

FIGURE 8 | Biotope at type-locality of Austrolebias ayoreode. Bolivia, Santa Cruz, Cordillera, Charagua Iyambae Guarani Autonomous Territory, Ñembi Guasu Conservation and Ecological Importance Area, 19°08'46"S 59°55'44"W, 10 Jun 2021. A. Well-illuminated area; B. Less illuminated area.

FIGURE 9 in Redescription of Austrolebias accorsii (Cyprinodontiformes: Rivulidae) and description of a new species of the genus from the upper Paraguay River basin

FIGURE 9 | Occurrence localities of Austrolebias species. Stars represent type-localities, dots other records. Colors differentiate the species (A. accorsii red, A. ayoreode yellow, A. bellottii dark yellow, A. ephemerus green, A. melanoorus pale green, A. queguay black, A. univentripinnis pale blue, A. vandenbergi blue) Sources: Biogeographic provinces from Morrone et al. (2022); Ecoregions from Olson et al. (2001); Basemap ESRI World Topo (2022).

FIGURE 6 in Redescription of Austrolebias accorsii (Cyprinodontiformes: Rivulidae) and description of a new species of the genus from the upper Paraguay River basin

FIGURE 6 | Austrolebias ayoreode. Males (immediately after collection). Two uppermost: MNKP 16590, paratypes, 34.7–34.8 mm SL, Bolivia, Santa Cruz, Cordillera, Charagua Iyambae Guarani Autonomous Territory, Ñembi Guasu Conservation and Ecological Importance Area. Lower six: MNKP 16587, paratypes, 21.2–34.7 mm SL, collected with uppermost.