Platycaranx chrysophrys

Atropus armatus differs in having a head profile very steep in adults (vs. slightly steep); lobe of second dorsal fin long, greater than head length (vs. usually short, less than head length); mature males over 21 cm FL only with filaments on soft dorsa- and anal-fin rays (vs. no filaments) and gill rakers (including rudiments) on first gill arch 31–37 (vs. 21–26).

Turrum coeruleopinnatus differs in having the profile of head steep (vs. gently sloped); head profile just above mouth steep (vs. vertical) and soft anal-fin rays 18–19 (vs. 15–17).

Carangichthys dinema differs in having brown blotches between bases of second dorsal-fin rays (vs. no markings); straight part of lateral line long, nearly equal to curved part (vs. shorter than curved part); scaleless breast area short ventrally, not extending beyond pelvic-fin origin (vs. long ventrally, extending beyond pelvic-fin origin) and head profile just above mouth vertical (vs. gently sloped).

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

Platycaranx malabaricus differs in having the head profile just above mouth gently sloped (vs. vertical); scaleless breast area long ventrally, often extending to second anal-fin origin (vs. short ventrally, extending to just behind pelvic fins) and gill rakers (including rudiments) on first gill arch 32–38 (vs. 21–26).

Carangichthys oblongus differs in having a straight part of lateral line slightly longer than curved part (vs. slightly shorter); small blue/black blotches between bases of second dorsal-fin rays (vs. no markings) and scaleless breast area separated from scaleless pectoral-fin base by a broad band of scales (vs. scaleless breast area uninterrupted to scaleless pectoral-fin base).

Platycaranx talamparoides differs in having the head profile just above mouth gently sloped (vs. vertical); scaleless breast area large, covering area above and in front of pectoral-fin base (vs. small extending to pectoral-fin base only) and gill rakers (including rudiments) on first gill arch 21–26 (vs. 27–31).