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Living inside surgeonfish, the bacteria grows to 600 microns long — larger than a grain of salt.

Once our sea legs acclimated to dry land, we enjoyed the fruits of our labor: yellowtail surgeonfish, known locally as cirujano.

Oversteegen also posted the photo to Facebook, noting the fish was likely a Caribbean Blue Tang, also known as a blue tang, blue tang surgeonfish, or a blue doctorfish.

Long-beaked parrotfish, big-eyed squirrelfish, translucent blue disc-shaped surgeonfish, and huge angelfish in a dozen patterns nibbled on brightly colored coral and darted through sea anemones.

Throughout the year, surgeonfish gather in spawning aggregations with every new and full moon.