Goby – Fire Dartfish

Introduction: The Fire Dartfish (Nemateleotris magnifica), also known as the Firefish Goby or Red Firefish, is a striking saltwater fish admired for its vibrant colors and peaceful nature. Originating from the tropical waters of the Indo-Pacific, this slender, dart-shaped fish displays vivid shades of red, orange, and white, making it a dazzling addition to reef and marine aquariums. Its energetic behavior and unique appearance make it a favorite among saltwater enthusiasts.

Scientific Name: The Fire Dartfish is scientifically known as Nemateleotris magnifica. It belongs to the Gobiidae family, commonly referred to as gobies.

Water Quality and Temperature: To provide the best environment for the Fire Dartfish, maintain the following water parameters:

• Temperature: Keep the water between 72°F to 80°F (22°C to 27°C).
• pH Level: Maintain a pH range of 8.1 to 8.4 to simulate their natural coral reef environment.
• Salinity: Ensure the salinity level is between 1.020 to 1.025 specific gravity.
• KH Level: Keep the carbonate hardness (KH) between 8 to 12 dKH.

Feeding: The Fire Dartfish is a carnivorous species that enjoys a varied diet. Ensure a healthy, balanced diet by offering:

• Pellets: Marine-specific pellets that are high in protein.
• Live or Frozen Foods: Offer brine shrimp, mysis shrimp, or finely chopped krill for a protein-rich diet.
• Flake Foods: Marine flake foods enriched with vitamins and minerals.
• Occasional Treats: Supplement with copepods or zooplankton to mimic their natural diet.

Tank Mates: The Fire Dartfish is a peaceful fish that thrives in community tanks. It does well with other small, non-aggressive species such as clownfish, damselfish, and gobies. Avoid housing it with large, aggressive species like triggerfish or groupers, which may intimidate or harm the Fire Dartfish. Keeping them in pairs or small groups can help reduce stress and promote natural behaviors.

Substrates and Tank Decorations: Provide a fine sand substrate to create a comfortable environment for the Fire Dartfish. Since they are known for darting in and out of hiding spots, incorporate plenty of live rock structures and crevices where they can retreat when feeling threatened. This also replicates their natural coral reef habitat, giving them places to establish territory and feel secure. Ensure the tank has a tightly fitting lid, as Fire Dartfish are known jumpers, especially when startled.

Suitable Plants: As a marine species, the Fire Dartfish does not rely on plants but benefits from a reef setup with live rock and coral formations. You can also include macroalgae like Chaetomorpha or Halimeda for additional filtration and aesthetic value in the aquarium.

Sexing: Sexing the Fire Dartfish is difficult as there are no easily distinguishable external features between males and females. They are typically sexed only by behavior or during the breeding process.

Breeding: Breeding Fire Dartfish in captivity is rare and challenging. They are egg layers, and in the wild, they typically spawn in crevices within the reef. In an aquarium setting, the lack of natural environmental cues makes breeding difficult. If successful, the fry would require a separate nursery tank and would initially feed on infusoria and plankton.

Maximum Size and Longevity: The Fire Dartfish can grow up to 3 inches (7.6 cm) in length. With proper care, they can live for 3 to 5 years in a well-maintained marine tank.

General Information: The Fire Dartfish is a peaceful and hardy species, known for its vibrant colors and energetic swimming style. It is a shy fish that thrives best in tanks with ample hiding spots, and it does well in reef environments due to its compatibility with coral. With its brilliant colors and gentle demeanor, the Fire Dartfish is a captivating and low-maintenance addition to saltwater tanks.

A Fun Fact: The Fire Dartfish’s dart-like swimming behavior is not just for show; it is an escape mechanism. When startled, it can quickly dart into the nearest hiding spot, which in the wild would be a small crevice in a coral reef.