ハコフグ / Ostracion immaculatus
ハコフグの甲板（こっぱん）は五角形や六角形の形状。
甲板とは硬い骨板のことで、鱗が変化したものです。
The boxfish (Ostracion immaculatus) has pentagonal and hexagonal shaped bony plates.
The bony plate is the one that have been changed from the scale.
Scientific Name : Ostracion immaculatus
Family: Ostraciidae
Order: Tetraodontiformes
Photo taken at Enoshima Aquarium
