Exquisite Firefish (Nemateleotris exquisita)

Not commonly available

 

• Small fish safe: ✅ Yes

• Small invert safe: ✅ Yes

• Coral safe: ✅ Yes

• Minimum tank size: 75 liters (20 gallons)

• Adult size: Up to 10 cm (4 inches)

• Diet: Carnivorous, primarily feeding on zooplankton

• Be aware of: Prone to jumping, requiring a secure lid; may be territorial toward conspecifics unless kept as a mated pair; requires ample hiding spots to feel secure

 

Appearance and Coloration

The Exquisite Firefish is a vibrant species distinguished by its golden-yellow anterior that transitions into a purple or bluish posterior, complemented by red accents on the dorsal and anal fins, and red tail lobes. This striking coloration, along with its elongated body and distinctive dorsal fin, makes it a captivating addition to marine aquariums. 

 

Natural Habitat and Behavior

Nemateleotris exquisita is native to the western Indian Ocean, with confirmed occurrences in regions such as Mauritius, KwaZulu-Natal (South Africa), and the Red Sea. It inhabits deeper reef environments, typically at depths ranging from 25 to 70 meters (82 to 230 feet). In the wild, these fish are often observed hovering near the substrate, retreating into crevices when threatened. They are generally peaceful but can exhibit territorial behaviour toward their own kind unless housed as a mated pair. 

 

Tank Requirements and Water Parameters

• Minimum Tank Size: 20 gallons (75 liters)

• Water Parameters:

• Temperature: 24°C – 27°C (75°F – 81°F)

• pH: 8.1 – 8.4

• Specific Gravity: 1.020 – 1.025

• Aquascaping: Incorporate ample live rock to create caves and crevices, providing necessary hiding spots. Ensure open swimming areas to accommodate their active nature.

• Lighting: Moderate to bright lighting, simulating their natural reef environment.

• Water Movement: Moderate flow to replicate their natural habitat.

• Tank Cover: A secure, tight-fitting lid is essential, as Exquisite Firefish are known to jump, especially when startled. 

 

Diet and Feeding

In their natural habitat, Exquisite Firefish primarily consume zooplankton and small invertebrates. In captivity, they adapt well to a varied diet:

• Captive Diet:

• Mysis shrimp

• Brine shrimp

• Copepods

• Finely chopped seafood (e.g., fish, shrimp)

• High-quality marine flakes and pellets

Feeding small portions 2-3 times daily helps maintain their health and vibrant coloration.

 

Compatibility and Social Structure

• Temperament: Generally peaceful; however, they can be territorial toward conspecifics unless kept as a mated pair.

• Tank Mates: Compatible with other peaceful species such as gobies, clownfish, and small wrasses. Avoid housing with aggressive or significantly larger species that may cause stress or outcompete them for food.

• Reef Compatibility: 100% reef-safe; they do not harm corals or invertebrates.

 

Important Considerations

• Jumping Behavior: Due to their propensity to jump, especially when startled, a securely covered aquarium is mandatory.

• Shyness: May exhibit timid behavior upon introduction to a new environment. Providing ample hiding spots will help them acclimate and reduce stress.

• Tank Stability: Prefers established aquariums with stable water parameters to thrive.