Maldive fish
The abundant sea harvest of the Indian Ocean around the Atolls of the Maldives and, Lakshadweep in India yields many pelagic fishes, like skipjack, yellowfin tuna, little tunny (known locally as laṭṭi) and frigate mackerel. All these fishes have been traditionally processed on the Maldive Islands as a main source of food as well as income for Maldivians.
Cleaner fish
The best known cleaner fish are the cleaner wrasses of the genus "Labroides" found on coral reefs in the Indian Ocean and Pacific Ocean. These small fish maintain so-called cleaning stations where other fish, known as hosts, congregate and perform specific movements to attract the attention of the cleaner fish. Remarkably, these small cleaner fish safely clean large predatory fish that would otherwise eat small fish such as these.