Moorish Idol The Moorish Idol fish is extremely common in the Indo-Pacific and around the reefs of Thailand. They are the sole species in the Zanclidae family, they look quite similar to Angelfish. Distinguishing Features Like many other tropical fish, the Moorish Idol has a laterally compressed body with bright bands of colour, mainly black, white, blue or yellow. They have a large dorsal fin with six or seven spines. Read More …