Bluespotted Jawfish
(Opistognathus rosenblatti)
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  • Bluespotted Jawfish - video
  • Stats

    Maximum Length: 4"
    Care Level: Moderate
    Family: Opistognathidae
    Reef Compatibility: Excellent
    Minimum Aquarium Size: 30 gal.
    Range: Mexico
    Diet: Carnivore
    Water Conditions: 75-80° F; sg 1.024-1.026 (1.025 is ideal); pH 8.1-8.4
    Ca 420-440 ppm, Alk 8-9.5 dKH, Mg 1260-1350, Nitrates <10ppm, Phosphates, < .10ppm
  • Notes

    This cartoon-like fish has an interesting personality and will spend most of its time in or around its burrow. Bluespotted Jawfish require at least 2"-3" inches of mixed substrate to construct their burrow. They may be kept singly or in pairs. The Bluespotted Jawfish is a peaceful fish and does well in reef tanks with other peaceful fish. They are aggressive towards other jawfish species.

    Make sure to cover the tank because Jawfish are prone to jumping from open aquariums, especially when first introduced. 

    Water Chemistry:

    Maintaining Ammonia at 0 ppm, Nitrites at 0 ppm, and Nitrates below 10ppm will help to keep your Bluespotted Jawfish happy and healthy. We recommend doing a water change soon after Nitrates rise above 10 ppm. Maintaining proper calcium (420-440 ppm), alkalinity (8-9.5 dkh - run it 7-8 if you are carbon dosing), and magnesium levels (1260-1350 ppm) will help to keep pH stable in the 8.1-8.4 range. We recommend a specific gravity of 1.024-1.026 with 1.025 being ideal for fish. Temperature should remain stable as well and should stay within a 2 degree range.

    Target feed the Bluespotted Jawfish a mixed diet of mysis shrimp and finely chopped meaty foods 4-6 times per week. Soaking all fish food with vitamins will help keep your fish healthier and make them less susceptible to disease. We recommend soaking food in garlic as well when adding new fish and whenever your notice ich or other disease in the aquarium. Garlic will help repel external parasites and will boost the fishes immunity.

    Remember to feed slowly. Leftover food will cause nitrates and phosphates to rise. If you see food falling to the sand bed and into the rocks, you should feed slower and give the fish a chance to eat before adding a little more. Using a turkey baster allows you to target food to different fish. For example you can feed the aggressive fish on one side of the tank and then squirt a little bit on the other side for the less aggressive fish. This way all the fish get a chance to eat enough.

  • Item Description Price Quantity
    Bluespotted Jawfish (Opistognathus rosenblatti)
    Size: 3" - 4"