Description: Lake Malawi contains a curious species of fish (ciclid) that holds their offspring in their mouth as they grow and develop. The eggs are fertilized and then help in the mouth until the offspring are able to survive on their own. The parents can still feed while they are taking care of the young but they will generally not feed as much. This phenomenon could be used to explore parental care and could be extended to discuss evolution of this interesting adaptation in this lake.
Web Resource: Mouthbrooding - Wikipedia