The Crescent Grunter (Terapon jarbua) is a ray-finned fish known for its oblong, compressed body and silvery-white color with curved dark stripes and a black dorsal fin blotch. It inhabits marine, brackish, and freshwater areas.
Scientific Name
Terapon jarbua
Habitat
Found in marine, freshwater, and brackish environments such as coastal waters, estuaries, mangroves, and tidal pools.
Conservation
Not currently listed as threatened; adaptable to multiple environments and widespread.
Lifespan
Typically around 5–8 years in the wild.
Fun Fact
Crescent Grunters make grunting sounds using their swim bladder, especially when captured or threatened.
Diet
Omnivorous – eats small fish, insects, algae, invertebrates, and sometimes even fish scales.
Average Size
Can grow up to 30 cm (11.8 inches), but commonly around 20 cm (7.8 inches).
Location / Placement info
Displayed in the Coastal Reef Exhibit, near the Ocean-View Tunnel
FAQ
What is the lifespan of the Crescent Grunter?
Crescent Grunters can live up to 6–8 years in the wild or in well-maintained aquariums.
What do Crescent Grunter fish eat?
They are omnivorous, feeding on small crustaceans, insects, algae, and detritus.
Are Crescent Grunter fish aggressive?
They are moderately peaceful, but may show territorial behavior in smaller tanks.
What is the ideal tank size for Crescent Grunter?
A minimum of 75 gallons is recommended to accommodate their active nature.
Do Crescent Grunter fish need a reef environment to survive?
No, but they prefer brackish or coastal environments with hiding spots and moderate flow.
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