FISHGOD

The world is infested by Kaigyo: fish that walk on land, eat concrete, and destroy buildings. Their typical behavior is bizarre enough, but ten years ago, Jaytle Nish witnessed these pests become murderers while under the command of a mystery person clad in black, and eat his parents whole. He takes on a job exterminating the fish while looking for leads, but instead finds a strange woman eating poisonous kaigyo flesh. From deadly fish to mysterious cultists, the odd duo will take on it all in this pop art-inspired revenge action series! (Source: Manga Mavericks)