Key Identification Features
- Its common name derives from a clear, distinct horseshoe-shaped marking that appears on its side.
- Its body features a number of broad brown bands, separated by narrow whitish-yellow bands that converge at the caudal peduncle and continue onto the tailfin.
- The caudal (tail) fin is red or orange, while the soft dorsal and anal fins are yellowish, and the dorsal fin is distinctly yellow.
- This species has three distinct basic color morphs: uniform dark brown, mottled grayish-brown, and a gray base color patterned with a network of fine polygonal markings.
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