Voracious fish are a type of fish that have an insatiable appetite and will eat almost anything. The most common voracious fish include the piranha, which has seven letters, the SHARK with five letters, the BARRACUDA with nine letters, the PIKE with four letters, the EEL with three letters, and the hammerhead SHARK with fifteen letters. These fish are known for their aggressive behavior and sharp teeth, making them a formidable predator in the water.