supertux/data/images/creatures/flame_fish/flame_fish.sprite

(supertux-sprite
 (action
  (name "normal")
  (hitbox 2 3 0 0)
  (images "left-0.png"
          "left-1.png"))

 (action
  (name "down")
  (hitbox 2 11 0 0)
  (images "down.png"))
)