Science has established that about 400 million years ago, some fish began to migrate to land. As a result of evolution, they eventually became terrestrial vertebrates. A group of Canadian physiological researchers at the University of Ottawa, led by Emily Standen, decided to verify this by teaching the fish to walk.
The protagonist of the experiment was the Nile polypere or bashir. This fish has many similarities with the representatives of the first tetrapods. Like them, the Bashirs move by leaning on their fins. The experiments involved several fish, which Emily forced from the first days after birth to live in a tank where there was very little water.
After the Bashirs lived in extreme conditions for eight months, Standen and her colleagues compared their pets with their counterparts from ordinary aquariums. The scientists were struck by several clear differences associated with changes in the sternum. The "land" Bashirs were much larger, which allowed them to move confidently outside the reservoir.
Experiments are currently ongoing. Canadian physiologists turned their attention to the changes that occur in the muscles of the Bashirs.