Lebtin Javelin Fish

The Lebtin javelin fish is an aquatic creature in the Animorph Series.

Physiology
This creature resembles a vast, bright yellow stingray, with a flat and oblong with two stalk-mounted eyes and two antennae on its underside. It has a row of twenty spears along the top of its wings. The creature shoots the spears from its mouth, first rolling a spear into a flap and then swelling up with water and then ejecting the water out to create momentum for the spear to attack prey.

Source

 * Animorphs #12: The Reaction.