Experts have found that watching fish, their measured movements in the aquatic environment have a beneficial effect on the human body: relieves tension, helps to relax, neutralizes stress. Children are always happy to consider the aquarium world, it brings them a lot of positive emotions, broadens their horizons, promotes a deliberate, careful attitude to nature, to all living things.
Wikipedia about Fish

Ancistrus dolichopterus

Ancistrus homeland is the mountain rivers of South America. These are small, up to 10 cm long fish, unpretentious and almost omnivorous. Aquarists love them for their useful ability to clean glass from overgrown algae. The content of Ancistruses in a home aquarium The minimum volume of the aquarium is 25 liters per fish, ideally… Read More »