Blue Spotted Jawfish (Opistognathus rosenblatti) – Saltwater Aquarium Guide
- Care Level: Moderate
- Temperament: Peaceful
- Diet: Carnivore
- Reef Safe: Yes
- Minimum Tank Size: 30 gallons
- Max Size: Up to 4 inches
- Water Parameters: pH 8.1-8.4, Salinity 1.023-1.025, Temperature 72-78°F
Comprehensive Guide – Blue Spotted Jawfish (Opistognathus rosenblatti)
The Blue Spotted Jawfish is native to the tropical waters of the Caribbean Sea. It is commonly found in sandy areas near reefs, often creating burrows for shelter.
The Blue Spotted Jawfish is reef-safe as it does not harm corals or other invertebrates. However, caution should be exercised when keeping it with small ornamental shrimps or other small crustaceans, as they may become prey.
The Blue Spotted Jawfish can grow up to 4 inches long.
This species is generally peaceful and can be kept with other non-aggressive fish. However, it may become territorial around its burrow, so providing ample space is essential.
There are no noticeable differences in appearance between males and females of the Blue Spotted Jawfish.
The average lifespan of the Blue Spotted Jawfish is around 5-8 years with proper care.
Diet in Aquariums:
The Blue Spotted Jawfish is a carnivorous species. It primarily feeds on small crustaceans and other meaty foods. In captivity, it can be fed various frozen or live foods such as brine shrimp, mysis shrimp, and small pieces of fish or shrimp.
Providing a sandy substrate is essential for the Blue Spotted Jawfish, as it will create burrows for shelter. Including some rock formations or coral skeletons for the fish to explore and hide among is also beneficial.
Captive Bred Availability:
The Blue Spotted Jawfish is occasionally available as captive-bred, although most specimens in the aquarium trade are wild-caught. Captive-bred individuals are generally hardier and more adaptable to aquarium conditions.
Compatibility with Tankmates:
The Blue Spotted Jawfish is generally compatible with other peaceful fish species. However, it may show aggression towards similar-looking species or those that occupy the same territory. Here are five specific tankmates that can be good choices:
- Firefish (Nemateleotris magnifica) – Peaceful and adds vibrant color to the tank.
- Yellow Watchman Goby (Cryptocentrus cinctus) – Similar size and peaceful nature.
- Banggai Cardinalfish (Pterapogon kauderni) – Peaceful and visually striking.
- Clownfish (Amphiprion species) – Can form a symbiotic relationship with anemones.
- Bicolor Dottyback (Pictichromis diadema) – Peaceful and adds contrasting colors.
Other Common Names:
The Blue Spotted Jawfish is also known by other common names such as Blue Dot Jawfish and Rosenblatt’s Jawfish.
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Popular Questions and Answers – Blue Spotted Jawfish (Opistognathus rosenblatti)
Q: What is the ideal tank setup for a Blue Spotted Jawfish?
A: The ideal tank setup for a Blue Spotted Jawfish includes a sandy substrate, rock formations or coral skeletons for hiding, and ample swimming space. It is important to provide a secure lid or cover to prevent escapes.
Q: Can the Blue Spotted Jawfish be kept in a reef aquarium?
A: The Blue Spotted Jawfish is considered reef-safe and can be kept in a reef aquarium. However, caution should be exercised when keeping it with small ornamental shrimps or other small crustaceans.
Q: Does the Blue Spotted Jawfish require a specific water flow in the aquarium?
A: The Blue Spotted Jawfish prefers moderate water flow in the aquarium. It is important to ensure proper filtration and water circulation to maintain good water quality.
Q: Can the Blue Spotted Jawfish jump out of the aquarium?
A: The Blue Spotted Jawfish can jump out of the aquarium if it feels threatened or stressed. It is recommended to have a secure lid or cover to prevent any escapes.
Q: How often should the Blue Spotted Jawfish be fed?
A: The Blue Spotted Jawfish should be fed small amounts of food multiple times daily. It is recommended to feed various meaty foods to ensure a balanced diet.