Fruits should be taken care of as sweets for cavies and never being offered much too much (could be once weekly) because of its fructose and fruit acids. Bananas are in fact full of fiber, but that is different from roughage, which refers back to the hardness from the food https://are-apples-good-for-guine97418.luwebs.com/21949047/the-smart-trick-of-can-guinea-pigs-eat-apples-that-nobody-is-discussing