I was going to try and remember what I had read but thought it would be easer to copy a paste so this is what I found out about my fish
Coloration
The doctorfish can vary slightly in its overall color. It can change from blue-gray to dark brown, and pale or darken dramatically. The dark color phase is commonly observed on reefs while the pale color phase is seen over sandy bottoms. It has from ten to twelve thin, dark, vertical bars visible on the sides. A broad, pale area is often present at the caudal fin base while the caudal spine sheath is dark. These bars separate the doctorfish from other regional Acanthurus species like the blue tang and the surgeonfish. There is a faint blue ring that encircles the scalpel on each side. The edges of the anal, dorsal, and caudal fins are blue, regardless of the body color.
This is the most wide-ranging of the species of Acanthurus in the Atlantic and is found from Massachusetts to Brazil, including the northern Gulf of Mexico and the Caribbean. It can also be found along the tropical western coast of Africa.
·Size, Age, and Growth
Doctorfish frequently reach about 12 inches (30 cm) in length, with a maximum size of 14 inches (35 cm).
· Food Habits
The doctorfish is a diurnal grazer, feeding on mostly algae and organic detritus found on compacted sand and rock bottoms. They form small groups and are often observed schooling with ocean tangs (A. bahianus) as they feed on algae. During feeding, doctorfish tend to hand their heads down while picking at the algae with its specialized teeth. Since the fish swallows its food whole, it must depend on a unique adaptation for breaking up the food into smaller pieces. It has a gizzard-like organ in the intestine that is partially filled with sand particles. This organ apparently helps the fish to grind up food prior to digestion.
