Alex Mustard / Portrait of a spotted sunfish (Lepomis punctatus) in front of reeds in a river. Rainbow River, Florida, United States of America.

Sergio Hanquet / Ocean sunfish (Mola mola) and Pilot fish (Naucrates sp). Tenerife, Canary Islands.

Sergio Hanquet / Ocean sunfish (Mola mola) and Pilot fish (Naucrates sp). Tenerife, Canary Islands.

Sergio Hanquet / Ocean sunfich (Mola mola) at sea with pilot fish. Sp: Pez Luna, Pejeluna - fr: Poisson lune.

Alex Mustard / Portrait of a spotted sunfish (Lepomis punctatus) in a river. Rainbow River, Florida, United States of America.

Alex Mustard / Spotted sunfish (Lepomis punctatus) in front of plants in Rainbow River, Florida, United States of America.

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) pair, Bahamas, Caribbean Sea

Joel Sartore / Photo Ark / Rock bass (Ambloplites rupestris) portrait, from the wild, Little River, near Maryville, Tennessee, USA.

Joel Sartore / Photo Ark / Spotted bass (Micropterus punctulatus) portrait, East Bay Regional Park District's Mobile Education and Aquatic Exhibits, California. Captive, occurs in USA.

Joel Sartore / Photo Ark / Spotted bass (Micropterus punctulatus) portrait, East Bay Regional Park District's Mobile Education and Aquatic Exhibits, California. Captive, occurs in USA.

Joel Sartore / Photo Ark / Spotted bass (Micropterus punctulatus) head portrait, East Bay Regional Park District's Mobile Education and Aquatic Exhibits, California. Captive, occurs in USA.