The world's fish are shrinking as the climate warms. We're trying to figure out why
- Written by Timothy Clark, Associate Professor - Animal Ecophysiology, Deakin University

Fish are the most diverse group of vertebrates, ranging from tiny gobies and zebrafish to gigantic tunas and whale sharks. They provide vital sustenance to billions of people worldwide via fisheries and aquaculture, and are critical parts of aquatic ecosystems.
But fish around the world are getting smaller as their habitats...