Orange Thorns (confirmed introduction)

Orange Spines dorsal fin spines The total number is 9, the total number of dorsal fin soft rays is 25-26, the total number of anal fin spines is 3, and the total number of anal fin soft rays is 23-24. The adult orange thorn can reach a maximum length of 35 centimeters. The growth period generally can grow once a month, but there will be time differences due to individual differences.

The adult fish of Orange Acantha has an oval body with flat sides, a small head, and the surface of the back of the head protrudes as it grows. The mouth is small, end-positioned, with a row of flat teeth on the left and right jaws. The teeth are fixed and not movable, and the tooth edges are notched. The dorsal fin and anal fin have sharp spines, and the fin rays are not extended; the pectoral fin is nearly triangular; the caudal fin is crescent-shaped, and as it grows, the left and right lobes gradually extend. The body of the adult fish is brown and black, with an orange freckle in front and behind the pupil, and part of the body below the base of the pectoral fin is orange-brown. The tail spines are bright orange, hence the name "orange spines". The caudal fin is black, with white bands near the caudal peduncle and the edges of the left and right leaves.

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