Fry are baby fish that have either just hatched or that have been livebared such as from a guppy. These fry are very small and a called fry because they are not adults
Fish can hear you talking - in a sense. Fish have small bodies (as you know) and thus can feel vibrations. Think about it: If a giant was next to you and speaks, you would feel the vibrations coming...
Starfish are aquatic invertebrates but are oftenly called "Echinodermata" or the class Asteroidea. Happyanswers56: Starfish are aquatic invertabrates. so it's right.