View source for Andaman And Nicobar Islands: Fauna

=FISHES=
Each life form in the sea is confined to its own particular zone, where pressure, light, temperature and salinity are more or less constant. In this stable environment some creatures have remained unchanged throughout their entire history. The now famous Coelacanth, one of the groups of fishes thought to have been extinct for 60 million years, has remained essentially like its relatives as they appear in fossils. Fishes are the masters of water world. For more than 360 million years they have inhabited it. Today we have about 40,000 varieties of fishes known to science. They range in size from 10 mm (Philippine Gobie) to 21m. (whale shark). Some are flattened, others inflated, many spindle shaped, a few snakelike, still others are compressed depending on the environment in which they live or particular way of life.
==MARINE AQUARIUM==
Marine fish and animal keeping still has a certain mystique attached to it. This is one of the most complicated aspects of live stock management. The animal husbandry involved in it is mainly nurtured through water chemistry and microbiology. The tropical coral reef inhabitants are generally maintained in glass boxes known to us as marine aquariums. These animals turn 'fragile' under captive atmosphere because the natural system to which they belong is so heterogeneous, complex and dynamic with every tide bringing in a different condition that is so difficult to create artificially. However, since May l853 when the first tropical marine aquarium was made public in London, much has been understood and we are now able to practice a system where these animals are acclimatized and taught to be happy in their new environs.