Maximum depth from Ref. 126840. Occurs in oceanic islands, dwelling in coral, algal and rocky reefs and on algal beds . An herbivore , cleaned by Elacatinus figaro observed off the coast of São Paulo, southeastern Brazil and by Pomacanthus paru observed at the reefs of the Abrolhos Archipelago, off eastern Brazil .
TP individuals readily separated from S. rubripinne by the presence of a distinctive bright-yellow area on the pectoral -fin axil, blackish caudal fin margins, yellowish dorsal and anal fins, and general body color which is grayish-white in S. axillare and blue-green in S. rubripinne. Initial phase individuals of S. axillare are brownish-gray with a yellow stain on the flanks and different from S. rubripinne by the absence of a bright- yellow area on the caudal peduncle and caudal fin. Head profile more rounded S. axillare .
Behavioural data for Gray parrotfish is currently being reviewed.
Diet information for Gray parrotfish is currently being compiled.
Reproduction data for Gray parrotfish is currently being compiled.
Marine; reef-associated; depth range 1 - 70 m . Tropical Southwest Atlantic: endemic to Brazil and its oceanic islands.
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