[Van down by the river]

Your Tang is a Mimic Surgeonfish/Chocolate TangAcanthurus pyroferus This is a juvenile. They grow to about 8-10 inches. Unfortunately they lose their beautiful yellow coloration. It resembles a Orange Shoulder TangAcanthurus olivaceus as well but seems to lack the blue trim on the anal fins, so I doubt it. Yes a algae/Spirulina rich diet is recommended for both.[/i]