Animal-assisted therapy (treatment by animals) was introduced by New York physician Boris Levinson.
Of course, the best “doctors” among animals are dolphins. It has long been recognized that communication with dolphins helps even children with Down syndrome and cerebral palsy.
Aquarium fish certainly have healing abilities. Smooth movements of colorful fish in clear water reduce stress. In addition, watching fish helps in the treatment of certain skin diseases – it has been observed that the aquarium distracts the patient and prevents him from scratching sores. And even the presence of the aquarium itself serves as the prevention of colds and asthma: evaporating water makes the air moist and healthy, while the dry atmosphere increases susceptibility to infections.