An aquarium including a tank (2) with at least two side walls (5a, 5b) converging at an angle and a services unit (10) associated with the tank. The services unit includes a filter (16) with a corresponding pump (17) for circulating the liquids present in the tank, characterised in that the filter and the corresponding pump are incorporated into a single technical element (11) designed to be removably supported within the tank (2) through attachment means to each of the convergent walls (5a, 5b) at the angle formed between them.
