South American lungfish, Lepidosiren paradoxa. Is the single species of lungfish found in swamps and slow-moving waters of the Amazon, Paraguay, and

- Image ID: MCWKJF

South American lungfish, Lepidosiren paradoxa. Is the single species of lungfish found in swamps and slow-moving waters of the Amazon, Paraguay, and

Paulo Oliveira / Alamy Stock Photo

Image ID: MCWKJF