For the following questions, refer to the following passage and illustration. Waterfall climbing cave fish (Cryptotora thamicola) are blind and have the ability to walk and climb in a manner similar to four-legged animals through the use of their fins. They are found in caves in Thailand with fast-flowing water and waterfalls. You are part of a research team looking to learn more about the fish, its habitat, and how it has developed its unusual physical adaptations.