Mouthbrooding, also known as oral incubation and buccal
incubation, is the care given by some groups of animals to their offspring by
holding them in the mouth of the parent for extended periods of time. Although
mouthbrooding is performed by a variety of different animals, most notably
Darwin's frog, fishes are by far the most diverse mouthbrooders. Mouthbrooding
has evolved independently in several different families of fish.