Tetraodon Murius Black is a rare, dark-toned freshwater pufferfish with monster personality—ideal for experienced aquarists with massive tanks and patience.

🐡 Tetraodon Murius Black – Product Description

The Tetraodon Murius Black, often sold under this trade name, is believed to be a rare, dark morph of a large freshwater puffer species—commonly linked to the Tetraodon mbu or other closely related puffers. Its deep charcoal to near-black coloration sets it apart, giving it an intense, mysterious appearance that makes it an immediate showpiece in any monster fish collection.

Highly intelligent, expressive, and interactive, this puffer species is not for beginners. It demands a large aquarium, pristine water conditions, and a specialized diet to keep its teeth healthy. With proper care, the Tetraodon Murius Black can live for decades and form a recognizable bond with its keeper, much like a pet dog.

🌊 Water Conditions

• Temperature: 75–80°F (24–27°C)

• pH Range: 7.0–7.8

• Hardness: 8–20 dGH (moderate to hard)

• Tank Size:

  • Juveniles: Minimum 150 gallons

  • Adults: 500–800 gallons is ideal

• Filtration: Heavy-duty (canister/sump); puffers have a high bioload

• Flow Rate: Low to moderate

• Lighting: Moderate, subdued lighting enhances dark coloration

• Substrate: Sand or fine gravel

• Décor: Provide caves, driftwood, and plenty of open swimming space

• Water Changes: Weekly 30–50% to maintain pristine conditions

🍽️ Feeding Habits

• Diet Type: Obligate carnivore

• Foods to Include:

  • Hard-shelled invertebrates (snails, mussels, clams, crayfish) to maintain tooth wear

  • Shell-on shrimp, squid, crab

  • Occasional meaty treats like tilapia, earthworms

• Feeding Frequency:

  • Juveniles: Daily small meals

  • Adults: 2–4 times per week depending on size

• Warning: Avoid only soft food—overgrown teeth can lead to starvation and require manual trimming

🐟 Tank Mates

• Best Setup: Species-only tank is safest

• If Attempting Companions:

  • Only large, peaceful, and durable tank mates (e.g., very large bichirs, robust bottom-dwellers)

  • Must be too large to be eaten and not prone to aggression or fin-nipping

• Avoid:

  • Any small, fast, or colorful fish

  • Aggressive tank mates

  • Shrimp, snails, and slow fish—puffer will likely eat or stress them

🛠️ Care and Behavior

• Temperament:

  • Solitary but curious

  • Can be territorial as it matures

  • Will interact with the aquarist and recognize feeding times

• Behavioral Traits:

  • Needs stimulation—provide food variety and some rearranged decor

  • May puff up when startled (only in extreme stress—do not provoke)

• Handling Caution:

  • Never handle directly

  • Keep tank covered securely; puffers may leap during feeding

• Lifespan: 15–20+ years with proper care

• Intelligence: High—some aquarists report pufferfish playing or reacting to their presence

📌 Summary

The Tetraodon Murius Black is a captivating giant freshwater puffer with unique looks and an even bigger personality. Its jet-black tones make it a prized specimen for expert aquarists, while its interactive nature and expressive behavior offer a level of companionship rare in fishkeeping. However, this species requires exceptional commitment, space, and maintenance.

If you’re prepared to meet its needs, this bold and rare black puffer can become the crown jewel of your monster tank.