Saturday, February 27, 2016

Banded butterflyfish

On most of our dives, we encounter banded butterflyfish.  They are frequently flitting about the reef in pairs.  Although they grow up to 6 inches long, most of the ones we see are close to 4 inches long.  Their color varies from silver to white, with two big black bands through the mid-body, and another band through the eye.  In the right light conditions, lovely, faint, blue and gold markings appear on the forehead.

Juveniles look similar to the adults, except they have a black spot that is bordered in white at the back of the dorsal fin.  This probably serves as a false eye spot, to confuse predators which direction the fish is going.

The juvenile was about 1.5 inches long.  I found it in shallow water (8 or 10 feet).  The other photos were taken at 25 to 35 feet.

A pair, heading to the right

Heading to the lower left

Blue and gold forehead markings are visible

Juvenile heading to the left, note the eye spot on its dorsal fin

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