Of course it's a problem. I'm not sure about Indonesia, but in Thailand catching and selling the young, while eating the grown is obviously unsustainable.
If Pulcher were eaten in Thailand, you can bet your house they eat them in Cambodia, and more than likely in Vietnam too. Did you know that pulcher in it's last years in Thailand would fetch more on a dinner plate in the posh Chinese restaurants in China Town than it would being sold into a fish tank! If all these little fishes we see are really Pulcher, and the catch them with nets, how do the big ones survive? It's impossible to fish with nets for small fish and not kill big fish by accident.