I am from Coimbatore and have started growing Channa Marulius (bullseye snakehead) in a small pond of size 8X8X1 metre. I have put in 700 seedlings of 4 to 5 inches in size. Stocking density varies a lot between the articles I have read so far. Asian countries stock as much as 50 fish per square metre. But we must note that they use formulated feed for them. Snakeheads need 45% protein for good growth. I don’t know if there are any commercial feeds available in India with that much protein content. Right now I’m feeding them with ground up fish waste that I collect from local fish vendors. We can also feed them dried fish or dried fish powder.
I’m searching for dry fish or fish meal in smaller quantities like 100 kgs or so here. Most vendors are ready to supply only large quantities like a few tons at a time.
Alternately, we can also use chicken intestine.
Please check the below link. It’s an article published by CARE at Tamilnadu who do research on snakehead species.