The Pokemon world, including the Hoenn region, is a fictional universe, and as such, there are no real companies operating within it, Japanese-language or otherwise. The games, anime, and other related media do not typically focus on specific industries like pelagic fishing or commercial whaling, and they tend to avoid real-world controversial topics like whaling. As a result, in-universe corporate entities, especially with specific industrial focuses such as these, are not well-documented or even existent within the Pokemon lore. In the Pokemon series, the main focus is on Pokemon trainers capturing and battling Pokemon rather than the intricacies of industry and commerce. Some in-game companies do exist, like the Devon Corporation headquartered in Rustboro City, Hoenn, which is known for its technological innovations and research into Pokemon-related items rather than fishing or whaling. Because of the nature of the Pokemon world and its fantasy setting, aiming to appeal to younger audiences and maintain a family-friendly environment, activities like commercial whaling are unlikely to be present or explored within the games or show. Therefore, I cannot provide names of companies from the Pokemon world that specifically engage in pelagic fishing and commercial whaling in the Hoenn region or any other part of the Pokemon world.