Tony Wu / Female Crowned puffer (Canthigaster coronata) tending to her eggs after spawning by cleaning and aerating them. East China Sea, Kagoshima Prefecture, Japan.

Tony Wu / Pair of Crowned pufferfish (Canthigaster coronata) spawning, with female in foreground and male in rear. East China Sea, Kagoshima Prefecture, Japan.

Tony Wu / Pair of Crowned pufferfish (Canthigaster coronata) getting ready to spawn, with female in foreground and male in rear. East China Sea, Kagoshima Prefecture, Japan.

Doug Perrine / Hawaiian crowned toby / Crowned puffer (Canthigaster coronata) portrait, South Kona, Hawaii, Pacific Ocean.

Doug Perrine / Hawaiian crowned toby / Crowned puffer (Canthigaster coronata) portrait, South Kona, Hawaii, Pacific Ocean.

Tony Wu / Pair of Crowned puffer (Canthigaster coronata) with the female above her clutch of yellow eggs immediately after spawning, Kyushu, Japan, Pacific Ocean.

David Fleetham / Crowned tobyfish (Canthigaster coronata), Hawaii.