Aquariums are often seen as tranquil havens for fish, providing a safe environment away from natural predators. However, this protection comes at the cost of their natural behaviours and environments, which are far more dynamic and stimulating.
Dr. Ellen Marks, a marine biologist at the University of Bristol, has conducted research indicating that fish in captivity can exhibit signs of boredom. “In the wild, fish are constantly challenged with finding food, avoiding predators, and interacting with other fish. In an aquarium, these challenges are significantly reduced,” Dr. Marks explains.
The study involved monitoring the behaviour of a group of cichlids housed in both enriched and standard tanks. The enriched tanks featured varying substrates, vegetation, and periodically changed layouts to mimic natural habitats. Over time, fish in the enriched tanks displayed more exploration and varied swimming patterns compared to those in the standard tanks, which showed repetitive swimming paths and less activity—behaviours often linked to boredom in animals.
Can Enrichment Prevent Boredom?





