Atropus hedlandensis

Atropus armatus is similar in having a steep head profile but differs in having no bump in head profile level with the eyes (vs. bump present, becoming more pronounced with age) and gill rakers (including rudiments) on first gill arch 31–37 (vs. 20–27).

Platycaranx chrysophrys differs in having head profile gently sloped (vs. very steep); no bump in head profile level with the eyes (vs. bump present, becoming more pronounced with age) and eye diameter smaller than snout length (vs. about equal to, or larger).

Turrum coeruleopinnatus differs in having no bump on head profile level with the eyes (vs. a bump present, becoming more pronounced with age); adults >25 cm TL with second dorsal-fin lobe short, less than head length (vs. second dorsal-fin lobe long, greater than head length) and second dorsal-fin central rays never filamentous (vs. males >16.5 cm FL with central rays long and filamentous).

Carangichthys dinema differs in having brown blotches between bases of second dorsal-fin rays (vs. no markings); head profile gently sloped (vs. very steep) and no bump on head profile level with the eyes (vs. a bump present, becoming more pronounced with age).

Platycaranx malabaricus differs in having a second dorsal-fin lobe long, greater than head length (vs. short, less than head length); second dorsal-fin central rays never filamentous (vs. males >16.5 cm FL with central rays long and filamentous); scaleless breast area long ventrally, often extending to second anal-fin origin (vs. short ventrally, extending to pelvic-fin origin) and scaleless breast area small, extending to pectoral-fin base only (vs. large, extending to area above and in front of pectoral-fin base).

Carangichthys oblongus differs in having blue/black blotches between bases of second dorsal-fin rays (vs. no markings); head profile gently sloped (vs. very steep) and no bump on head profile level with the eyes (vs. a bump present, becoming more pronounced with age).

Platycaranx talamparoides differs in having the second dorsal-fin lobe long, greater than head length (vs. short, less than head length); second dorsal-fin central rays never filamentous (vs. males >16.5 cm FL with central rays long and filamentous); scaleless breast area long ventrally, often extending to second anal-fin origin (vs. short ventrally, extending to pelvic-fin origin) and scaleless breast area small, extending to pectoral-fin base only (vs. large, covering area above and in front of pectoral-fin base).