Pearly Yellowhead Jawfish - Opistognathus aurifrons
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The Pearly Yellowhead Jawfish (Opistognathus aurifrons) is a charming burrow-dwelling fish with a white body, light blue fins, and a striking yellow head. Known for its fascinating mouthbrooding behavior, this peaceful species adds activity and interest to sandy-bottom marine aquariums.
Common Name: Pearly Yellowhead Jawfish
Scientific Name: Opistognathus aurifrons
Family: Opistognathidae
Size: Up to 3 inches (7.5 cm)
Temperament: Peaceful
Difficulty: Moderate
Reef Safe: Yes
Native Region: Found throughout the Caribbean, typically in sandy reef flats and rubble areas where it constructs burrows for shelter.
Tank Size: Minimum of 30 gallons
Temperature: 74–80°F (23–27°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate: Fine sand essential for burrow construction; provide rockwork or rubble for additional shelter.
• Burrowing Behavior: Requires a deep sand bed to establish stable burrows.
• Diet: Carnivorous—accepts frozen mysis, brine shrimp, and high-quality pellet foods.
• Behavior: Peaceful and shy; may retreat when startled but will emerge to feed and interact.
• Tankmates: Compatible with other non-aggressive species; avoid large or aggressive fish that may harass the jawfish.