The Catfish is both the ninth level as well as the third boss of Castle Crashers. Before the fight, a Big Fish appears but is shortly shot down by a cannonball. The boss enters on the right of the screen out of the water. The fight starts immediately. You are aided by the King and his boat in this fight.
This can be a somewhat tricky fight. When the Catfish surfaces, it will cough up a hairball. Make sure you destroy this hairball, as if it hits the King's boat, the King's Gray Knights will not be able to load a cannonball into the cannon. Keep the Catfish over to the right of screen and the cannonball will hit him, causing him to be stunned and stick out his tongue. Do your combos on his tongue for extra damage. As soon as you see it is ready to punch you, back off or block. If you choose to block, you can land a quick hit or even a Projectile Attack in between his series of punches for added damage. Of course, you'll want to try and stay on some sort of floatation device to make moving about the water easier. When the Catfish goes under, it will stick its arm out with a Bear in its fist. If he spots you with his telescope, he will start punching you. It is best to simply stand still, then block with your shield.
Slowly dwindle the creature's health down and it will half submerge itself and cut left and right across the screen. You'll want to stand in front of the King's boat at this point and to lure the Catfish at you. As it approaches, jump out of the way and it will crash into the boat, forcing it to resurface. Repeat this until the Catfish is defeated.
The Catfish attacks by punching the player, causing damage and knocking him/her off the floatation device they are floating on (if any), by diving underwater and having the Bear grasped in its hand direct it towards the player, also called the "Flap", causing damage and knocking them off the floatation device they are floating on (if any), and finally swimming back and forth, crashing into the player, causing damage and knocking them off the floatation device they are floating on. This only happens when the Catfish has less than 1/2 Health and no longer uses the "Flap" attack. This is also the only attack of the Catfish that is unblockable with the Shield.
During the fight with the Catfish, the player is restricted by the King's boat to the left and by an invisible wall to the right. Players should avoid all of the Catfish's attacks, as being knocked into the water makes the fight much harder. Whenever the Catfish hacks up a hairball, the player should destroy it, because if it hits the King's boat his Gray Knights will not be able to fire the cannon. Once a player destroys the hairball, keep the Catfish still, as the cannon can still miss him. This should cause the Catfish to be hit in the head with the cannonball, briefly stunning him (for about 3 to 4 seconds.) The player can then attack his exposed tongue, dealing lots of damage. Although beating the Catfish takes time and this fight can be tricky, the risk of death is fairly low.
When the Catfish is defeated, it will sink below the surface of the stream. The player receives no reward. The Bear riding it will float to the surface, face down.
- The Catfish's eyes are neither fish nor cat, but amphibian. This is probably a joke, because an amphibian is a creature that can live in both land and water. Cats live on land, and fish live in water.
- The grave of the Catfish is seen during the credits when the players passes by the Tall Grass Fields level with Bears crying next to it.
- If you were to throw a boomerang behind it, as shown in the video below, it would stay there dealing massive damage and would allow you to gain exceptionally large amounts of XP. However it has been patched.