Home > Fishes > Butterflyfishes > Chaetodon mertensii

Updated 12/31/2017

Family Chaetodontidae

TROPICAL PACIFIC

Chaetodon mertensii

Rainmaker Point, Tutuila, American Samoa, 40 feet



Paradise Taveuni, Fiji, 40 feet


Juvenile, Paradise Taveuni, Fiji, 40 feet

MERTEN'S or ATOLL BUTTERFLYFISH    Benio-chochouo

Uncommon in deep lagoons and reefs from 10 to 400 feet.  Feeds upon benthic invertebrates and algae.  Has U-shaped saddle lined with white on the forehead & crosshatch pattern on side.  May hybridize with C. xanthurusAttains 5 inches.  Okinawa, Philippines east to the Tuamotus.