October 31, 2012
What is that animal?
BY: Peter Brannen

Carlos Minguell © Oceana
Click “read more” to find out
These are the iridescent scales of the stoplight parrotfish captured during an Oceana expedition off of Key Largo. So named because of thier unique coloration (the fish even changes from red to green as it gets older), the vividly decorated stoplight parrotfish feeds mainly on coral polyps, tearing off and crushing chunks of coral skeleton with its parrot-like beak in order to devour the symbiotic algae that lives on it, known as zooxanthellae. After digesting the coral it comes out on the other end as limestone sand. A single parrotfish is able to produce a ton of the stuff in a year.

©wikimedia commons
MOST RECENT
May 14, 2026
May 13, 2026
April 24, 2026
March 20, 2026
February 26, 2026
Reuseables & Refillables: A Sustainable Future Is Closer Than You Think
February 20, 2026
Hope From the Sky: Tracking and Protecting North Atlantic Right Whales


