Blue Tangs grow an average of two inches per year in the first few years of their lives. Then their growth slows down to one inch every year. This rate can vary depending on the Tang's living environment, diet, water quality, temperature, oxygen concentration, and other factors.

How big do blue tangs grow?

Adult regal blue tang fish typically weigh around 21.15 ounces (600 grams) and are 4.72 to 14.96 inches (12 to 38 centimeters) long. Males are typically larger than females, according to the ADW.

How fast do hippo tangs grow?

From 3" to 5" in 18 months.