Jawfish – Yellowhead (Opistognathus randalli)
Care level: Intermediate
Diet: Carnivorous
Light requirement: Medium
Place of origin: Western Pacific
Temperature: 22-28°C (72-82°F)
Water parameters: Specific gravity (SG): 1.020-1.025, pH: 8.1-8.4
Yellowhead jawfish are known for building burrows. A sandy or rubble-rich substrate is recommended to support this behavior. During the day, they typically remain near the entrance of their burrow, appearing idle. At night, they become active, moving around and rearranging objects in the surrounding area.
| Parameter | Value |
|---|---|
| Species | Opistognathus randalli |
| Behavior | Burrow builder, nocturnal activity |
| Substrate preference | Sandy or rubble-rich |
FAQ
What kind of substrate is best for Yellowhead jawfish?
A sandy or rubble-rich substrate is recommended to support their burrowing behavior.
How active is the Yellowhead jawfish during the day and night?
During the day, it spends most of its time idling near the entrance of its burrow. At night, it becomes active and rearranges objects in the vicinity.
What is the ideal water temperature for Yellowhead jawfish?
The ideal temperature range is 22-28°C (72-82°F).
Joanne Jackson –
The yellowhead jawfish is a fascinating addition to my tank. It builds a burrow quickly and is very active at night. I made sure to use a sandy substrate, and it has been thriving. Easy to observe and adds a unique dynamic to the tank.
Alexandra Cornish –
I noticed the fish spends most of the day near the burrow entrance. At night, it moves around the area, rearranging small objects. The water parameters are stable, and it seems healthy. A bit of rubble helps it feel secure.
Dan McLean –
This species is a real highlight. The burrow-building behavior is entertaining to watch. I’ve kept it in a 55-gallon tank with proper lighting and temperature. It adapts well to the environment and is not aggressive.