Alex Mustard / Yellowtail damselfish (Microspathodon chrysurus) guards eggs laid on a sea rod coral. East End, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.

Alex Mustard / Colony of Elkhorn coral (Acropora palmata) growing on a coral reef and making a home for Yellowtailed damselfish (Microspathodon chrysurus). The growth in this photo represents 12 year's growth since...

Alex Mustard / Portrait of an intermediate stage Yellowtail damselfish (Microspathodon chrysurus), this species changes colour during its life to avoid intraspecies aggression. East End, Grand Cayman, Cayman Islands...

Pete Oxford / Yellowtail damselfish, juvenile (Microspathodon chrysurus) Bonaire, Netherlands Antilles, Caribbean

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) grazing on algae near Yellowtail Damselfish (Microspathodon chrysurus), Sullivan Bay, Santiago Island, Galapagos Islands, Ecuador

Pete Oxford / Yellowtail Damselfish (Microspathodon chrysurus), Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Yellowtail Damselfish (Microspathodon chrysurus) juvenile, Bonaire, Netherlands Antilles, Caribbean

Joel Sartore / Photo Ark / Jewel damselfish (Microspathodon chrysurus) portrait, Albuquerque BioPark Aquarium. Captive, occurs in Caribbean Sea.

Claudio Contreras / Yellowtail damselfish (Microspathodon chrysurus) juvenile, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico, May

Alex Mustard / Staghorn coral (Acropora cervicornis) spawning at night in late summer, with a sleeping Yellowtail damselfish (Microspathodon chrysurus) inside. East End, Grand Cayman, Cayman Islands, British West In...