Question: which  southern region of Asia did  Indian whiting inhabits its  east and west coasts

Context paragraphs:
Estuarine whiting: The estuarine whiting, "Sillago vincenti" (also known as Vincent's whiting), is a species of benthic inshore marine fish of the smelt-whiting family, Sillaginidae.  The estuarine whiting is very similar in appearance to the northern whiting, "Sillago sihama", and as such was mistaken for the latter until 1980, when R.J. McKay identified the species based primarily on swimbladder morphology.  The estuarine whiting is distributed along both the east and west coasts of India, primarily inhabiting the muddy substrates of estuaries.  The species is locally important to fisheries in India, and is recognized as having aquaculture potential.

Indian subcontinent: The Indian subcontinent or the subcontinent, also called the Indian continent, is a southern region of Asia, mostly situated on the Indian Plate and projecting southwards into the Indian Ocean from the Himalayas.  Geologically, the Indian subcontinent is related to the land mass that rifted from Gondwana and merged with the Eurasian plate nearly 55 million years ago.  Geographically, it is the peninsular region in south-central Asia delineated by the Himalayas in the north, the Hindu Kush in the west, and the Arakanese in the east.  Politically, the Indian subcontinent usually includes Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan and Sri Lanka.

Pacific Telegraph Act of 1860: The Pacific Telegraph Act of 1860 called for the facilitation of communication between the east and west coasts of the United States of America.  Hiram Sibley of the Western Union Telegraph Company won the contract.  In 1861, Benjamin Franklin Ficklin joined Hiram Sibley in helping to form the Pacific Telegraph Company of Nebraska.  At the same time, Jeptha Wade was asked by Hiram Sibley to consolidate smaller telegraph companies in California.  While the Pacific Telegraph Company built west from Omaha, Nebraska, the Overland Telegraph Company of California was thus formed and built east from Carson City, Nevada.  With their connection in Salt Lake City, Utah on October 24, 1861, the final link between the east and west coasts of the United States of America was made by telegraph.  The First Transcontinental Telegraph lead to the immediate demise of the Pony Express.  The Pacific Telegraph Company and the Overland Telegraph Company of California were eventually absorbed into the Western Union Telegraph Company.

Eastern school whiting: The eastern school whiting, "Sillago flindersi" (also known as the redspot whiting and the Bass Strait whiting), is a species of benthic marine fish of the smelt-whiting family Sillaginidae.  The eastern school whiting is endemic to Australia, distributed along the east coast from southern Queensland down to Tasmania and South Australia, where it inhabits sandy substrates from shallow tidal flats to depths of 180 m on the continental shelf.  Eastern school whiting prey on various crustaceans and polychaete worms, with the diet varying seasonally and throughout the range of the species.  Eastern school whiting reproduce in the deeper waters twice a year, releasing up to 110,000 eggs during a season.

Indian whiting: The Indian whiting, "Sillago indica", is a poorly known species of coastal marine fish of the smelt-whiting family Sillaginidae.  The species was named in 1985, having previously being misidentified as another species of Sillago, "S. parvisquamis".  The Indian whiting inhabits the east and west coasts of the Indian subcontinent, apparently not extending to the southern tip of India.  Like all sillaginids, it is benthic in nature, living in depths to 30 m where it is caught by fishermen alongside other species of "Sillago".

Northern whiting: The northern whiting, "Sillago sihama" (also known as the silver whiting and sand smelt), is a marine fish, the most widespread and abundant member of the smelt-whiting family Sillaginidae.  The northern whiting was the first species of sillaginid scientifically described and is therefore the type species of both the family Sillaginidae and the genus "Sillago".  The species is distributed in the Indo-Pacific region from South Africa in the west to Japan and Indonesia in the east, also becoming an invasive species to the Mediterranean through the Suez Canal.  The northern whiting inhabits coastal areas to 60 m, but is most often found in shallow water around bays and estuaries, often entering freshwater.  It is a carnivore, taking a variety of polychaetes and crustaceans.  The species is of major economic importance throughout the Indo-Pacific.  It is most frequently taken by seine nets and cast nets and marketed fresh.

Western trumpeter whiting: The western trumpeter whiting, "Sillago burrus", is a species of marine fish of the smelt whiting family Sillaginidae that is commonly found along the northern coast of Australia and in southern Indonesia and New Guinea.  As its name suggests, it is closely related to and resembles the trumpeter whiting which inhabits the east coast of Australia and is distinguishable by swim bladder morphology alone.  The species inhabits a variety of sandy, silty and muddy substrates in depths from 0 to 15 m deep, with older fish inhabiting deeper waters.  Western trumpeter whiting are benthic carnivores which take predominantly crustaceans and polychaetes as prey.  The species reaches sexual maturity at the end of its first year of age, spawning in batches between December and February The species is taken as bycatch with other species of whiting and shrimps in Australia.

Southern school whiting: The southern school whiting, "Sillago bassensis", (also known as the silver whiting or trawl whiting) is a common species of coastal marine fish of the smelt-whiting family that inhabits the south and south-west coasts of Australia.  Its distribution overlaps a number of other common sillaginids, with careful observation of anatomical features occasionally needed to distinguish between species.  The southern school whiting is closely related to the eastern school whiting, "Sillago flindersi", and initially were thought to be all one species.  The species inhabits both shallow inshore sandy waters, as well as deeper offshore waters, with a transition of habitats occurring with increasing age.  It is a predatory fish, taking a variety of crustaceans, polychaetes and bivalves as prey.  It reaches sexual maturity at three years of age, and spawns multiple times between December and April.  The southern school whiting is commonly caught by commercial and recreational fishermen, often while fishing for related species, especially the sought after King George whiting.  The species is marketed fresh in southern Australia.

Humblot's heron: Humblot's heron ("Ardea humbloti"), also known as the Madagascar heron, is a species of heron.  In Madagascar, it is uncommon to the north and west coasts as well as Lake Alaotra, but also inhabits the Comoro Islands and Mayotte.

Bay whiting: The bay whiting, "Sillago ingenuua", is a species of coastal marine fish of the smelt-whiting family Sillaginidae.  The bay whiting's range extends throughout the west Indian Ocean, including northern Australia, Thailand, India and Taiwan, where it inhabits protected waters.  It is benthic in nature, preying on shrimps, polychaetes and molluscs, however little else is known of its biology.  Bay whiting are an important part of some inshore fisheries around Australia and Asia, where subsistence and commercial fishermen regularly take the species.

Supporting paragraphs: Indian whiting Indian subcontinent
Answer: The Indian subcontinent