🐠 Helfrich’s Firefish (Nemateleotris helfrichi)
🐠Helfrich’s Firefish (Nemateleotris helfrichi)
Marine Dartfish • Peaceful Community Species • Reef-Safe • Beginner-Friendly
📋 The Helfrich’s Firefish (Nemateleotris helfrichi) is one of the most striking and sought-after reef-safe species, prized for its vivid purple-and-yellow coloration and smooth, graceful swimming style.
Extremely peaceful and shy, it thrives in calm marine aquariums with plenty of open swimming space and secure rockwork for retreat.
Best kept singly or as a bonded pair, this species shows its best colours under high-quality reef lighting.Highly prized, elegant, and beginner-friendly, the Helfrich’s Firefish is a premium choice for reef aquariums and peaceful community setups.
💡 Highlights
✨ Graceful Swimming Style: Smooth hovering midwater motion
⚪ Reef-Safe Species: Ideal for all coral systems
📏 Peaceful & Shy: Excellent for gentle community tanks
✅ Beginner-Friendly: Hardy once settled
🌈 Premium Colouration: Vivid purple, yellow, and white tones
🧾 A Quick Look at the Helfrich’s Firefish
📛 Common Name: Helfrich’s Firefish
🔬 Scientific Name: Nemateleotris helfrichi
👨👩👧 Family: Gobiidae
🌍 Origin: Indo-Pacific
📏 Max Size: 6–7 cm (≈ 2.4–2.8″)
💧 pH Range: 8.1–8.4
🌡️ Temperature Range: 24–27 °C (≈ 75–81 °F)
🧠 Care Level: Moderate
💖 Temperament: Peaceful
🪸 Reef Safe: ✅ Yes
🏠 Min Tank Size: 75 L (≈ 20 US gallons)
📌 Tank Level: Midwater / Open Water
🧬 Captive Bred: ❌ No
🌿 Wild Caught: ✅ Yes
⏳ Lifespan: 4–6 years
🍽️ Diet: Carnivore (small meaty foods)
🐣 Reproduction: Spawning pair

















