Inhabits mangroves and sheltered (often salty and brackish) coastal areas in 0-3 m depth . Occurs in aggregations . A nocturnal species .
Dorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 8. This semi-transparent species has a silvery to slight golden sheen colouration; a narrow dark midlateral stripe; black-edged first dorsal fin; and a small black spot at the middle of caudal-fin base. It is similar to Fibramia lateralis but generally smaller and the female has a small black spot behind the eye .: short and / or deep; Cross section: compressed.
Behavioural data for Mangrove cardinalfish is currently being reviewed.
Marine; reef-associated; depth range 0 - 3 m . Tropical West papua), the Philippines and Papua New Guinea.
The following diseases are known to affect Mangrove cardinalfish.
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