Catfish is an enemy that only appears in the Blowin' the Dam level in Duke Nukem Forever . Not actually an enemy, Catfish are more like innocent bystanders; they just lazily swim in place with their mouths open.
Catfish never attack you. Even if you swim up and stare them in the face, Catfish still lazily swim there. Catfish don't care. Catfish don't give a shit. They're really pretty badass.
Catfish are ugly, gray fish that inhabit the Hoover Dam. Alltogether, there are 15 of them, hiding in various locations in "Blowin' the Dam " Shooting them will result in a cloud of blood. When the cloud clears, nothing of the catfish remains.