I see many people in the Philippines put alligator gars in small aquariums, including channa argus, like seriously these fish grow up to a meter where are you gonna put them when they grow huge. If ever they don't grow it is because their growth is stunted due to the limited tank dimensions. I've talked to some people who intentionally plan on stunting their fishes' growth..
same everywhere just all over asia get that rep but really that's where most of the fins come from anyway...
In Asia, lack of space, expensive tanks and cheap fish.