Great video dave, as always
Congratulation on your 3kg bawal (red belly pacu), one of my favorite fresh water species beside snakehead.
If im not mistakenly the fishing pond in your story is called "galatama pond", you pay the ticket and compete usually 1-2 hour per round, and typically the local angler compete for the money prize only, yes some kinda undercover gambling The fish released back after weighting.
And the rule is using bait (boilie or dough) made from tapioca powder and food flavoring essence and you cant use floater or make the bait float, and lure is prohibited
I have few angler buddy in bandung, and they are lure angler targeting for snakehead or bawal. I can introduce you to them, PM me if you interested.