Premnas biaculeatus (Lightning Maroon Clownfish)
• Small fish safe: ✅ Yes
• Small invert safe: ✅ Yes
• Coral safe: ✅ Yes
• Minimum tank size: 150L+ (preferably 200L+ for pairs or anemone hosting)
• Adult size: ~15 cm (6 inches)
• Diet: Omnivorous (marine pellets, flakes, frozen mysis/brine shrimp, and algae-based foods)
• Be aware of: Extremely aggressive, especially when hosting an anemone. Large, dominant females can be highly territorial.
Lightning Maroon Clownfish (Premnas biaculeatus) – A Stunning and Aggressive Clownfish Variant
The Lightning Maroon Clownfish is a captivating and highly sought-after designer clownfish. This stunning variant of the Maroon Clownfish (Premnas biaculeatus) features an intricate, lightning bolt-like white pattern across a deep red or maroon body, making it one of the most visually striking clownfish varieties available. Despite its beauty, it retains the aggressive nature of Maroon Clownfish, making it best suited for experienced aquarists who can manage its territorial behavior.
Appearance and Coloration
Lightning Maroon Clownfish are instantly recognizable due to their bold and unique patterning:
• Deep maroon to red body, with intensity varying based on age and lighting.
• Intricate white “lightning” patterning, which can be highly variable between individuals.
• Bright yellow or orange fins, with some specimens developing a deeper maroon hue with age.
• Females are significantly larger and darker than males, as clownfish are protandrous hermaphrodites (all start as males and can transition to females if needed).
No two Lightning Maroon Clownfish are identical, making each specimen a unique addition to an aquarium.
Natural Habitat and Behaviour
Lightning Maroon Clownfish originate from Papua New Guinea, where the first specimens were discovered and selectively bred to establish this distinctive designer morph. They:
• Form symbiotic relationships with anemones, particularly Bubble Tip Anemones (Entacmaea quadricolor).
• Are highly territorial and aggressive, especially when paired or defending a host anemone.
• Live in strict dominance hierarchies, with a dominant female leading the pair.
In captivity, they do not require an anemone but will still claim a coral, rock structure, or artificial decoration as their territory.
Tank Requirements and Water Parameters
Due to their aggressive nature and large size, Lightning Maroon Clownfish need a spacious, well-structured aquarium with stable water conditions.
• Minimum tank size: 150L+ (200L+ recommended for pairs or anemone hosting)
• Temperature: 24–27°C (75–81°F)
• pH: 8.1–8.4
• Salinity: 1.020–1.025
• Water movement: Moderate to strong
• Filtration: Good-quality filtration and regular water changes are essential to maintain excellent water quality.
A well-structured tank with rock formations will provide hiding spots for tank mates and reduce territorial disputes.
Diet and Feeding
Lightning Maroon Clownfish are omnivores, requiring a varied diet to maintain health and vibrant coloration.
Recommended foods include:
• High-quality marine pellets and flakes – Provides essential nutrients.
• Frozen mysis and brine shrimp – Excellent protein sources.
• Chopped seafood (shrimp, squid, or fish) – Occasional treats.
• Algae-based foods or spirulina – Supports digestion and immune function.
Feed 1-2 times per day, ensuring portions are small enough to prevent overfeeding and water quality issues.
Compatibility and Tank Mates
Lightning Maroon Clownfish are one of the most aggressive clownfish varieties, making careful tank mate selection essential.
Best tank mates include:
✔ Semi-aggressive to aggressive fish, such as Dwarf Angelfish, Wrasses, and Tangs.
✔ Fast-moving fish that can hold their own, such as Damselfish, Basslets, and larger Gobies.
✔ Reef-safe invertebrates, such as shrimp, snails, and crabs, are generally safe.
Avoid housing with:
❌ Other clownfish species, unless in a very large tank (300L+) to prevent deadly fights.
❌ Small, timid fish (e.g., Firefish, small Gobies) that may get bullied.
❌ Slow-moving species, as Lightning Maroons can become highly territorial.
When introducing a pair, it is best to select a much smaller male to avoid excessive aggression from the dominant female.
Hosting Anemones
Lightning Maroon Clownfish naturally host Bubble Tip Anemones (Entacmaea quadricolor), but they may also accept:
• Sebae Anemone (Heteractis crispa)
• Long Tentacle Anemone (Macrodactyla doreensis)
⚠ Important Notes:
• Anemones require strong lighting (LEDs, metal halides, or T5s) and stable water conditions.
• Clownfish do not need an anemone to thrive.
• Anemones should only be kept by experienced aquarists.
Health and Disease Considerations
Lightning Maroon Clownfish are generally hardy, but they can be susceptible to:
• Marine Ich (Cryptocaryon irritans) – Often triggered by stress or poor water quality. Quarantining new fish is recommended.
• Brooklynella (Clownfish Disease) – A parasite affecting clownfish, causing excessive mucus production and respiratory distress.
• Bacterial infections – Often caused by aggressive encounters or poor water conditions.
To maintain health:
✔ Provide a varied diet rich in vitamins and marine algae.
✔ Ensure stable water parameters with regular maintenance.
✔ Quarantine new fish before introducing them to the main tank.
Lifespan and Long-Term Care
With proper care, Lightning Maroon Clownfish can live up to 10-15 years in captivity. Their stunning coloration, strong personality, and hardy nature make them a highly desirable yet challenging species for marine aquarists.
Why Choose a Lightning Maroon Clownfish?
✔ Unique, lightning bolt-like white markings – No two fish are identical.
✔ Striking deep maroon coloration – A visually dramatic fish.
✔ Hardy and adaptable, making them resilient in aquariums.
✔ Can live long lives, up to 15 years in captivity.
✔ Will host anemones if available, but does not require one.
⚠ Important Considerations Before Buying a Lightning Maroon Clownfish:
🚫 Extremely aggressive – Best kept singly or in a bonded pair.
🚫 Defends its territory fiercely, especially when hosting an anemone.
🚫 Requires a moderate to large tank – Needs swimming space and shelter.