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Species: Spinipterus sp. (1) Caption: Close-up of pectoral fin	Species: Ancistrus caucanus Caption: Close-up of pectoral fin
Species: Chaetostoma anale Caption: Close-up of pectoral fin	Species: Chaetostoma platyrhynchus Caption: Close-up of pectoral fin
Species: Chaetostoma vagum Caption: Close-up of pectoral fin	Species: Hypostomus argus Caption: Close-up of pectoral fin
Species: Hypostomus niceforoi Caption: Close-up of pectoral fin	Species: Hypostomus oculeus Caption: Close-up of pectoral fin
Species: Synodontis grandiops Caption: Close-up of pectoral fin	Species: Synodontis waterloti Caption: Close-up of pectoral fin
Species: Panaque schaeferi Caption: Close-up of pectoral fin area	Species: Callichthys callichthys Caption: Close-up of pectoral fin ray
Species: Acanthicus hystrix Caption: Close-up of Pectoral fin. Rio Tocantins, near town of Estreito, Maranhão state, Brazil	Species: Pseudolithoxus dumus Caption: Female, close-up of pectoral fin
Species: Pseudolithoxus kinja Caption: L385, Close-up of pectoral fin	Species: Pseudolithoxus dumus Caption: Male, close-up of pectoral fin