Aquarium dimension for discus: This plays a vital role for discus keeping. If you choose proper dimension then half of your job is already done. We know that discus is a round or disc shaped fish. So due to this body shape this fish moves more vertically than horizontally. More they move more they grow fast.
The definition of a lip is either the top or bottom edges of the mouth, something that resembles these, or an outer or upper edge or rim. An example of a lip is what's used when kissing. An example of a lip is the edge of a glass. Lip is defined as to touch the lips to something. An example of lip is putting a musical instrument to your mouth in order to play. either of the two fleshy folds forming the edges of the mouth. anything like a lip, as in structure or in being an edge, rim, or margin; specif., the edge of a wound.
The human lips (labia oris) is the junction between the outer facial skin and inner buccal mucosa that lines the mouth cavity. The outer layers are largely similar to skin except that the lips has fewer layers. The color of skin is determined by the amount of natural pigment known as melanin.