I've fished in a lot of places here, and never caught a pacu more than a couple of kiloes. Wife caught a 34kg catfish in Chonburi. I'll dig out a pic for that. We also have Gourami in pond seven, but they are mini-gouramis not giants.
I only fish in ponds one and two for fish to eat; mostly pla nin.
As for passports. I got Mildred a UK one when she was about 2. Never used it, but I thought it important to get her into the system. Easier to renew a passport than get one from scratch when in the teens. So far so good. The wife's visa was a nightmare. And when she finally got going, she was detained in Kuala Lumpa and missed her follow-on-flight to London. Had to get her a ticket back to Bangkok a few days later. Also flights to Spain from England were wasted. In all, lots of dosh done and also - just like yourself - tons of stress; all round.