Fish Intelligence

Described as “stupid, stupid, memoryless, and forgotten.” This may have been common because of “outdated views of primitive beings that did not evolve”, but this impression was mistaken: it was endowed with the ability to count, and the value of cooperation was “fostered”, and it turned out to appreciate its space and pass a maze. They use tools, create insect hunting techniques, and remember details, objects and faces. A 2013 study by Christian Agrelo (University of Padua) showed that “members of newly hatched guppies can choose / join a group with more than two groups. The ability of young fish to learn this distinction between two unequal groups confirms that numerical skills, or some of them, have emerged since hatching. The ability of fish to assess numbers is important to their survival, as fish usually avoid their fierce enemy by joining large swarms. It was also found that if placed in an unknown environment, they would prefer to join more swarms.

Besides the skills of counting and counting the larger groups, the value of “collaboration” between fish and their peers of the same or other species is evident. Grouper and trout collaborate with eel (such as the giant Murray eel) to eject prey hidden in Cracks are narrow, as the grouper and trout shake their head to the Murray snake to invite them to share hunting prey. In a study conducted in 2014, specialists showed that “trout” is quickly learning how to choose the best sea eels skill in fishing. I experimented with putting food out of the reach of trout, and soon realized that he needed a partner to help him get it. He had repeatedly chosen the most skilled sea snakes as opposed to the “little trick” snakes in prey hunting. “This experiment confirms that even though their brain is small compared to warm blood, some fish have cognitive abilities that are comparable to or even superior to monkeys,” says Alexander Phil Guy (University of Cambridge) and the author of the study.

A 2016 study found that fish (including freshwater blind cave fish) have a great ability to perceive space, receiving sensory information such as hydrostatic pressure to identify their location in a three-dimensional space. Teresa Bert de Pereira of the University of Oxford notes: “Fish can recognize the three-dimensional space, while many animals on the ground face some problems in the vertical dimension, and unlike mice .. Fish can assess the vertical distance Accurately, depth estimation There are “unconfirmed” signals that fish have something like “place cells” found in mice as the “hippocampal region” of the brain, neurons that activate when an animal occupies a specific place in its environment, and in different locations. , Which is the basis of the neural map of spatial space in mammals. Fish have “locating cells” in an area of ​​their brains that correspond to the hippocampus in humans and may be used by the fish to build a “memory space” around them.

Solve the maze puzzle
According to a study published in February 2017, “guppies” (many are reared at home) can shrewdly emerge from a maze of six consecutive intersections. After five days of training, she was able to improve her speed out of the maze and reduce her mistakes. “The performance of the fish has been amazing, and it is close to the performance of rodents and mice that are expected to perform similar tasks to adapt to the life of maze-like burrows, unlike fish living in different environments, He did not expect to learn to come out so quickly. ” Guppies have the ability to identify tracts because, if left out of the ponds, they will live in obstructed river streams.