Reuters: The digestive systems of fish play a vital role in maintaining the health of the oceans and moderating climate change, researchers said on Thursday. Computer models showed how bony fish produced a large portion of the inorganic carbon that helps maintain the oceans’ acidity balance and was vital for marine life, they said. The world’s bony fish population, estimated at between 812 million and 2 billion tons, helped to limit the consequences of climate change through its effect …