Today, invasive species management in aquatic habitats is a global concern. Aquarium keeping and ornamental fish breeding have become a growing sector all over the world. Most of these ornamental fishes are invasive alien species, which is considered today as the second most threat to the world next to habitat loss. Organisms or species that are non-native to a habitat and which can threaten the native environment or human health are known as invasive alien species. This has become more active in the development of exotic ornamentals in India, as customers are very much interested in rearing varieties of new fish species. A country like India, which is well-known for its vast aquatic resources, especially for its freshwater fisheries, the continuous ornamental fish trade and the release of alien or foreign fishes into the marine environment represents a major danger to India’s native aquatic biodiversity. Most of these ornamental fishes are imported to India from other countries. The majority of exotic ornamental fishes are also bred in India, where the demands for such fishes are easily met by a sufficient supply to those people who pursues their hobby in breeding such exotic ornamental fishes. The general public, researchers and especially the policymakers should be aware of the implications of such ornamental fishes in the freshwater habitats like the wetlands of India. The aquarium fish trade and the accidental discharge of alien species into these freshwater habitats should be strictly monitored and controlled. Otherwise, ornamental fish invasions will destroy the entire aquatic native biodiversity. To date, India lacks a strict comprehensive law in protecting its marine environment from the exotic ornamental fishes. Thus, the research will highlight on why it is the need of the hour to have a sui-generis law in India for the purpose of conserving and protecting its marine biodiversity at large.