Raccoon butterflyfish (Chaetodon lunula) and saddle wrasse (Thalassoma duperrey), off the island of Lanai, Hawaii, United States of America, Pacific, North America

Shoal of Cortez Rainbow Wrasse, Thalassoma lucasanum, La Paz, Baja California Sur, Mexico

Female Turkish Wrasse, Thalassoma pavo, Vis Island, Mediterranean Sea, Croatia

Female Turkish Wrasse, Thalassoma pavo, Vis Island, Mediterranean Sea, Croatia

Sunset wrasse (Thalassoma lutescens) initial phase, Pohnpei, Federated States of Micronesia, Caroline Islands, Micronesia, Pacific Ocean, Pacific

Rainbow wrasses (Thalassoma lucasanum).

Underwater scenes from the lower Gulf of California (Sea of Cortez), Baja California Sur, Mexico. Shown here are rainbow wrasse (Thalassoma lucasanum) feeding on an urchin test.

Bluehead Wrasse (Thalassoma bifasciatum), large school of females and males feeding on coral reef, Cayman Islands, Caribbean

Underwater scenes from the lower Gulf of California (Sea of Cortez), Baja California Sur, Mexico. Shown here are rainbow wrasse (Thalassoma lucasanum) feeding on an urchin test.

Underwater scenes from the lower Gulf of California (Sea of Cortez), Baja California Sur, Mexico. Shown here are rainbow wrasse (Thalassoma lucasanum) feeding on an urchin test.

Endemic Hawaiian Saddle Wrasse (Thalassoma duperrey) approach to clean a Reef Manta Ray (Mobula (formerly Manta) alfredi) of parasites at a reef cleaning station off the Kona Coast, the Big Island, Hawaii, USA. This particular female manta with a missing

Hawaii, Saddle wrasse (Thalassoma duperrey), Colorful fish in the open water.

Bluehead Wrasse, Thalassoma bifasciatum, Netherlands Antilles, Bonaire, Caribbean Sea

Twotone wrasses (Thalassoma lunare) and Klein's butterfly fish (Chaetodon kleinii) eating eggs, Komodo National Park, Indian Ocean, Indonesia, Southeast Asia, Asia

Ornate wrasse (Thalassoma pavo), Santa Maria Island, Azores, Portugal, Atlantic Ocean