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Fig. 12. Brachyhypopomus benjamini. MUSM 39915 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 12. Brachyhypopomus benjamini. MUSM 39915 (WC10.160104), holotype, male, 126 mm TL (head, and body in lateral and dorsal view, specimen fixed in formalin and preserved in EtOH); Peru, río Ucayali, Amazonas dr. Scale bars = 5 mm.
Fig. 7 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 7. Collection records for Brachyhypopomus arrayae (circles), B. belindae (squares), and B. bullocki (triangles). Holotype locations are marked with open symbols. Elevation data refers to altitude above mean sea level (see Fig. 2 for legend).
Fig. 4. Brachyhypopomus alberti. a. CBF 10284 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 4. Brachyhypopomus alberti. a. CBF 10284 (WC24.280607), holotype, male, 97 mm TL (head in lateral view, and body in lateral and dorsal views); b. ANSP 197573 (WC03.250607), paratype, female, 91 mm TL (body in lateral view); Bolivia, río Beni, Amazonas dr. Note the sexual dimorphism in body pigmentation, in which females are darker. Specimens fixed in formalin and preserved in EtOH. Scale bars = 5mm.
Fig. 22. Brachyhypopomus draco. a. MCP 19847 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 22. Brachyhypopomus draco. a. MCP 19847 (part), male, 138 mm TL (head in lateral view, body in lateral and dorsal view); Brazil, rio Ibicuí, Uruguay dr. b. MCP 13643, female, 132 mm TL (body in lateral view); Brazil, rio Sanga, rio Tramandaí dr. Note sexual dimorphism in caudal filament height. Specimens fixed in formalin and preserved in EtOH. Scale bars = 5 mm.
Fig. 11. Brachyhypopomus belindae. MCP 45360 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 11. Brachyhypopomus belindae. MCP 45360 (WC05.050497), holotype, immature, 110 mm TL (head in lateral view, body in lateral and dorsal views, specimen fixed in formalin and preserved in EtOH); Brazil, rio Solimões-Japurá confluence, Amazonas dr. Scale bars = 5 mm.
Fig. 1 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 1. Live individuals of 12 sympatric species of Brachyhypopomus and one species of Microsternarchus from the vicinity of Tefé, Amazonas, Brazil (Amazonas dr.). a. Brachyhypopomus batesi MCP 45312 (WC01.191293b), immature, 102 mm TL. b. Brachyhypopomus beebei head – uncat., immature, 75 mm TL; body – MCP 45450 (WC04.090600), female, 178 mm TL. c. Brachyhypopomus belindae MCP 45430, paratype, immature, 104 mm TL (photographed out of water, close up of head not available). d. Brachyhypopomus bennetti MCP 45451, male, 196 mm TL. e. Brachyhypopomus brevirostris uncat., immature, 224 mm TL. f. Brachyhypopomus flavipomus MCP 45453 (WC09.090600), female, 98 mm TL. g. Brachyhypopomus hamiltoni MCP 45482 (WC05.080301), holotype, female, 97 mm TL. h. Brachyhypopomus hendersoni MCP 45489, female, 164 mm TL. i. Brachyhypopomus pinnicaudatus MCP 45455, female, 135 mm TL. j. Brachyhypopomus regani, MCP 45285 (WC02.100301), male, 119 mm TL. k. Brachyhypopomus sullivani MCP 45464 (WC04.210201), immature, 79 mm TL. l. Brachyhypopomus walteri MCP 45458 (WC 03.090600), male, 161 mm TL. m. Microsternarchus bilineatus uncat., 85 mm TL.
Fig. 19. Brachyhypopomus bullocki. a. MZUSP 96498 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 19. Brachyhypopomus bullocki. a. MZUSP 96498, male, 188 mm TL (head in lateral view and body in lateral and dorsal view); b. TNHC 17486, female, 140 mm TL (body in lateral view); Venezuela, río Parguaza, Orinoco dr. Specimens fixed in formalin and preserved in EtOH. Scale bars = 5 mm.
Fig. 3 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 3. Measurements used for morphometric analysis of Brachyhypopomus. See text for details. a. Body, lateral view: AF = Anal-fin length; ARL = Longest anal-fin ray; BD1 = Body depth at anal-fin origin; BD2 = Body depth at anal-fin middle; CD = Caudal-filament depth; CF = Caudal-filament length; LEA = Length to end of anal fin; TL = Total length. b. Body, dorsal view: BW1 = Body width at anal-fin origin; BW2 = Body width at anal-fin middle; CW = Caudal-filament width. c. Head, lateral view: AE = Internarial distance; BO = Branchial aperture; HD1 = Head depth at eye; HD2 = Head depth at occiput; HL = Head length; PRL = Longest pectoral-fin ray; OD = Orbital diameter; PB = Pectoral-fin base; PE = Posterior naris to eye; PO = Postorbital distance; PP = Snout to pectoral-fin base; PR = Preorbital distance (snout length); SA = Snout to anal-fin origin; SO = Snout to occiput. d. Head, dorsal view: HW1 = Head width at eye; HW2 = Head width at occiput; IO = Interorbital width. e. Head, ventral view: MW = Mouth width. Schematics based on B. diazi (UF 174333).
Fig. 21. Brachyhypopomus diazi. a. MBUCV-V 35655 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 21. Brachyhypopomus diazi. a. MBUCV-V 35655 (WC04.210304), male from type locality, 160 mm TL (head in lateral view, body in lateral and dorsal view); b. UF 174333 (WC03.210304), female from type locality, 141 mm TL (body in lateral view); Venezuela, río Alpargatón, río Salado dr. Note sexual dimorphism in caudal filament height. Specimens fixed in formalin and preserved in EtOH. Scale bars = 5 mm.
Fig. 18 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 18. Collection records for Brachyhypopomus brevirostris (circles). Precise locality of the lectotype is not known. Elevation data refers to altitude above mean sea level (see Fig. 2 for legend).
Fig. 6. Brachyhypopomus arrayae. a. UMSS 7048 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 6. Brachyhypopomus arrayae. a. UMSS 7048 (WC52.060707), holotype, immature male, 77 mm TL (head in lateral view, body in lateral and dorsal views); b. UF 177342 (WC54.060707), paratype, male, 97 mm TL (body in lateral view); c. ANSP 197574 (WC50.060707), paratype, female, 128 mm TL (body in lateral view); Bolivia, río Beni, Amazonas dr. Note the sexual dimorphism in body pigmentation, in which females are considerably darker. Specimens fixed in formalin and preserved in EtOH. Scale bars = 5mm.
Fig. 15. Brachyhypopomus bombilla. MCP 19847 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 15. Brachyhypopomus bombilla. MCP 19847 (part), male, 156 mm TL, non-type (head in lateral view, and body in lateral and dorsal view, specimen fixed in formalin and preserved in EtOH); Brazil, rio Ibicuí, Uruguay dr. Inset of head emphasizes outline of the opercular accessory electric organ with a black line. Scale bars = 5 mm.
Fig. 17. Brachyhypopomus brevirostris. a. MCP 45470 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 17. Brachyhypopomus brevirostris. a. MCP 45470 (WC11.110801b), immature female, 193 mm TL, (head only, specimen fixed in formalin); Brazil, rio Tefé, Amazonas dr. b. NMW 65040, lectotype, sex not determined, 163 mm TL (body in lateral view, specimen preserved in EtOH), Brazil, rio Guaporé, Amazonas dr. c. MCP 45262 (WCNR06.090600), male, 366 mm TL, non-type (body in lateral and dorsal view, specimen fixed in formalin and preserved in EtOH); d. MCP 45260 (WC02.180598), female, 305 mm TL, non-type (body in lateral view; specimen fixed in formalin and preserved in EtOH); Brazil, rio Solimões-Japurá confluence, Amazonas dr. Note the extreme sexual dimorphism in caudal-filament length. Scale bars = 5mm.
Fig. 9. Brachyhypopomus beebei. a. MCP 45462 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 9. Brachyhypopomus beebei. a. MCP 45462 (WC04.150801b), immature female, 134 mm TL, non-type (head in lateral view, body in lateral and dorsal view, specimen fixed in formalin); Brazil, rio Tefé, Amazonas dr. b. USNM 120753, holotype, 103 mm TL (originally 136 mm TL, tail now lost) (body in lateral view, specimen preserved in EtOH); Venezuela, río San Juan, Orinoco dr. c. MCP 45424 (WC04.010599), male, 204 mm TL, non-type (body in lateral view, specimen fixed in formalin and preserved in EtOH); d. MCP 45427 (WC01.130300), female, 153 mm TL, non-type (body in lateral view, specimen fixed in formalin and preserved in EtOH); Brazil, rio Solimões-Japurá confluence, Amazonas dr. Note the sexual dimorphism in caudal filament height. Scale bars = 5 mm.
Fig. 10 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 10. Collection records for Brachyhypopomus beebei (circles). Holotype location is marked with an open symbol. Elevation data refers to altitude above mean sea level (see Fig. 2 for legend).
Fig. 14 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 14. Collection records for Brachyhypopomus bennetti (circles), B. cunia (squares), and B. diazi (triangles). Holotype locations for B. bennetti and B. cunia, and location of lost holotype for B. diazi are marked with open symbols. Elevation data refers to altitude above mean sea level (see Fig. 2 for legend).
Fig. 5 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 5. Collection records for Brachyhypopomus alberti (circles), B. batesi (squares), and B. benjamini (triangles). Holotype locations are marked with open symbols. Elevation data refers to altitude above mean sea level (see Fig. 2 for legend).
Fig. 13. Brachyhypopomus bennetti. a. MCP 47021 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 13. Brachyhypopomus bennetti. a. MCP 47021 (WC13.160893), female, 158 mm TL (head in lateral view, and body in lateral and dorsal views, specimen fixed in formalin and preserved in EtOH). b. MCP 45359 (WC18.050497), male, 192 mm TL (body in lateral view, specimen fixed in formalin and preserved in EtOH). c. MCP 45359 (WC12.050497), female, 169 mm TL (body in lateral view, specimen fixed in formalin and preserved in EtOH); Brazil, rio Solimões-Japurá confluence, Amazonas dr. Note the sexual dimorphism in caudal filament height. Scale bars = 5 mm.
Fig. 2 in A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Fig. 2. Collection records for Brachyhypopomus based on 11,750 specimens from 2,642 georeferenced museum lots. Map of South and southern Central America based on HydroSHEDS data. Elevation data refers to altitude above mean sea level.
FIGURE 2 in Human impacts and the loss of Neotropical freshwater fish diversity
FIGURE 2 | Geographical distribution of studies published in this Special Issue of Neotropical Ichthyology. Colors indicate the type of impact. Five papers are not shown in the map, because they covered large spatial extents (i.e., whole basins or the Neotropical region).
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
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