"Mistério da Piracema: Por Que os Peixes Sobem o Rio São Francisco para Desovar?"

"Ever wondered why some fish swim over 600 miles (1,000 km) just to lay their eggs? Discover the incredible natural phenomenon called Piracema. In this video, we explore: The Science of Migration: Why 'rheophilic' fish like the Surubim, Dourado, and Tambaqui need this marathon to burn fat and trigger reproductive hormones [02:44]. Survival Challenges: The obstacles they face, from predatory fishing and dams to natural predators and pollution [02:17]. The Salmon Connection: How this Brazilian phenomenon compares to the famous salmon runs in Alaska [06:00]. Conservation & Law: The importance of the 'Defeso' period (closed season) to ensure the survival of these species [04:21]. Captivity Breeding: How science helps reproduce these migratory species in fish farms without the long swim [07:56]. Presented by Artur, a veterinarian passionate about aquatic wildlife. Join us on this journey through the waters of the São Francisco and Amazon rivers to understand the heartbeat of Brazilian aquatic life."