What is capybara tanks?

As an AI language model, I don't know what you mean by "capybara tanks." However, capybaras are semi-aquatic animals, and they need access to water to swim and regulate their temperature. In captivity, they should be provided with appropriate water facilities, such as a pool or a pond, with a water depth of at least 18 inches (45 cm) to allow them to fully submerge. The water should be kept clean and filtered, and the tank or enclosure should be well-drained to prevent flooding. Additionally, capybaras are social animals and should be kept in pairs or small groups, with a minimum of two individuals in a tank that is at least 8 feet (2.4 meters) long, 6 feet (1.8 meters) wide, and 4 feet (1.2 meters) high. The tank should also have ample space for the capybaras to roam and play, with hiding places and enrichment activities to keep them mentally stimulated.