Size27.5 inches (70 cm)
DietAlgae and a variety of invertebrates, such as jellies or other plankton
RangeIndo-Pacific from the Red Sea and East Africa to Papua New Guinea, north to the Ryukyu Islands and south to Australia
HabitatCoastal lagoons out to seaward reefs and occasionally in deeper water offshore
- Adults grow to approximately 27.5 inches (70 cm) in length.
- The body is rounded and strongly compressed.
- Adult has a bony hump on the forehead and its dorsal and anal fins are high and arched, but in proportion to its body.
- The juvenile looks very different from the adult. It has a very short body with extremely tall dorsal and anal fins and does not have a forehead hump.
- Coloration is yellowish silver or dusky in color and have a short dark vertical bar through the eye and another wider bar behind the operculum.
Juvenile longfin batfish will mimic leaves for protection.
- Feeds on algae and a variety of invertebrates, such as jellies or other plankton.
- Longfin batfish occurs in the Indo-Pacific from the Red Sea and East Africa to Papua New Guinea, north to the Ryukyu Islands and south to Australia.
- Juveniles inhabit sea grass meadows, mangrove areas and floating sargassum weed beds in shallow protected inner reefs.
- Adult is usually found from coastal lagoons out to seaward reefs and occasionally in deeper water offshore.
- Longfin batfish is found most often at depths to 65 feet (20 m).
- Commonly encountered near a deep wreck, mainly in the mid-waters above it.
- “Not Evaluated” on the IUCN Red List.
- Adult may be solitary or occasionally form large schools.
- Juveniles have been observed mimicking floating leaves in coastal waters. They also will form schools under floating rafts of sargassum.
- It is believed that this batfish spawns in the open ocean and its larvae transform into the tall juvenile when it is less than an inch (25 mm) long.
- Another common name for this fish is “teira batfish.”
- Coral Sea Reef Guide. Halstead, B.
- Southeast Asia Tropical Fish Guide. Kuiter, R. H. and Debelius, H.