Anguilla japonica

This is so eponymous with food that I can't find any information about it besides farming and its utilization in food. When I decided to study it for Midsummer Ox Day, all I found was farming videos and post-cooked and during cooked videos. I know more about how to prepare it then I do about its habitat in the wild. It's supposedly found in many rivers in Japan and it brings itself to the sea like other eels to mate and lay their eggs and then people catch its larva and raise them in disturbing conditions. I can't believe that lady even said they were happy. Then again, those were probably a different anguilla species, not the Japanese one, but it seems that their raised in very close quarters. People are always concerned about chickens being cooped up in cages or in giant barns where they can't help but brush up against one another. But when eels are forced to do it they're "happy". All eel products are either wild-raised or captured from the wild and raised in captivity from a young age. Aside from their lifecycle within the tanks, there is nothing that I know about them. There's an absolute refusal by Youtube and by my basic search back then on Ecosia and Google to get any information about them in the wild. It seems like people simply don't care, because all they are is food. They're just food. Even cows get more respect than this, but maybe in the past it was a lot more like this. Not being able to find anything about them except for their use as livestock and how to raise them based as livestock.