Wandering Eye Fish

The Wandering Eye Fish is a pre-Hardmode enemy that can be spawned by fishing in a Blood Moon. When the bobber dips and the player attempts to reel in a fish, a Wandering Eye Fish or a Zombie Merman has a chance to spawn in place of a fish, within a few blocks of the bobber. It can kill unprepared players in just a few hits.

It has a similar appearance to Demon Eyes and Wandering Eyes, being named after the latter. Instead of severed nerves and blood vessels trailing from its rear, it sports red fins. It closely resembles the Fish of Cthulhu.

Tips

 * The Wandering Eye Fish has high health and defense, and it also doesn't take knockback.
 * One way to effectively fight the Wandering Eye Fish is to obtain a movement accessory such as a Cloud in a Bottle or Rocket Boots and make tight circles around the enemy. Its top speed can easily outrun early-game players, but its turning radius is no match for a bit of strategy. The same strategy can also be used for any other tough mobs with the same AI, such as bats.
 * The Wandering Eye Fish cannot open doors, so fishing inside will allow you to contain it, although all zombies during a Blood Moon can. Summons can kill it for you, or, since it wanders away if it can't get to you, you can slip inside briefly to hit it before exiting, then repeat as necessary.
 * Unlike most flying enemies, the Wandering Eye Fish can enter water, but it will still be slowed down when submerged.

History
游荡眼球怪鱼