The research on the evolution of the fish that gave rise to the tetrapods gradually adapting to life on land are generally carried out by examining fossils such as the Tiktaalik roseae, a species dating back to the Devonian period, about 375 million years ago. Instead, a study published in the journal “Nature” was conducted by three scientists from McGill University in Montreal, Canada, studying modern fishhes, the gray bichir, also known as the Senegal bichir or Cuvier’s bichir (scientific name Polypterus senegalus), studying their behavior on land.