Alex Mustard / Sharpnose puffer (Canthigaster rostrata) portrait with the eyes standing out against a dark background, East End, Grand Cayman, Cayman Island, British West Indies, Caribbean Sea.

Magnus Lundgren / Wild Wonders of China / Valentin's toby (Canthigaster valentini), Xiaoliuqiu Island, Taiwan

Magnus Lundgren / Wild Wonders of China / Valentin's toby (Canthigaster valentini) sleeping, Xiaoliuqiu Island, Taiwan

Magnus Lundgren / Wild Wonders of China / Sleeping Valentin's toby (Canthigaster valentini) Xiaoliuqiu Island, Taiwan

Gary Bell/ Oceanwide / Black Saddled Toby (Canthigaster valentini), Great Barrier Reef, Australia

Georgette Douwma / Bennet's sharpnose puffer (Canthigaster bennetti). North Sulawesi, Indonesia.

Claudio Contreras / Spotted sharpnose puffer fish (Canthigaster punctatissima), Espiritu Santo National Park, Sea of Cortez (Gulf of California), Mexico, February

Claudio Contreras / Spotted sharpnose puffer fish (Canthigaster punctatissima), Espiritu Santo National Park, Sea of Cortez (Gulf of California), Mexico, February

Constantinos Petrinos / Black saddled toby (Canthigaster valentini) hiding among the branches of a Red Soft Coral Tree (Dendronephthya sp.), Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Black saddled toby (Canthigaster valentini) hiding among the branches of a Red Soft Coral Tree (Dendronephthya sp.) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Black saddled toby (Canthigaster valentini) Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Black saddled puffer / Valentin's sharpnose puffer (Canthigaster valentini) in coral reef, West Papua, Indonesia.