* By weight: The Whale Shark (Rhincodon typus) is the largest fish in the world and is found in Indian waters. They can grow up to 40 feet long and weigh up to 47,000 pounds!
* By length: Again, the Whale Shark would be the largest by length.
* By specific species: Within specific species, you could have different contenders. For example, the Giant Grouper (Epinephelus lanceolatus) can reach lengths of up to 10 feet and weigh over 1,000 pounds.
It's important to note that:
* Whale Sharks are not commonly found in Indian waters.
* Giant Groupers are critically endangered and are not often sighted.
Therefore, while the Whale Shark is the biggest fish in the world, the Giant Grouper could be considered the largest fish found in India if you're looking at specific species.
To truly determine the "biggest" fish of India, you would need to consider what criteria you are using to define "biggest".