France didn't lose 15,000 people due to the heat in 2003, they lost 15,000 people due to neglect. A lot of people took off for their socialist-guaranteed vacation in August and left their enfeebled Granny behind to fend for herself. They died of neglect -- not heat.
15,000 fish died from neglect? Understandable - maybe. 15,000 people? No way...