Claudio Contreras / Panamic fanged blenny (Ophioblennius steindachneri), San Agustin Bay, Huatulco Bays National Park, southern Mexico, November

Franco Banfi / Panamic fanged blenny (Ophioblennius steindachneri) Malpelo Island National Park, UNESCO World Heritage Site, Colombia, East Pacific Ocean

Michele Westmorland / Fanged blenny (Ophioblennius steindachneri) Galapagos Islands.

Michele Westmorland / Fanged blenny (Ophioblennius steindachneri) Galapagos Islands.

Birgitte Wilms / Large-banded Blenny (Ophioblennius steindachneri) portrait, 40 feet deep, Galapagos Islands, Ecuador

Joel Sartore / Photo Ark / Horseface blenny (Ophioblennius steindachneri) head portrait, Downtown Aquarium Denver. Captive, occurs in eastern Pacific Ocean.

Joel Sartore / Photo Ark / Horseface blenny (Ophioblennius steindachneri) portrait, Downtown Aquarium Denver. Captive, occurs in eastern Pacific Ocean.

Joel Sartore / Photo Ark / Horseface blenny (Ophioblennius steindachneri) portrait, Downtown Aquarium Denver. Captive, occurs in eastern Pacific Ocean.