Product Description
The Marine Betta (Calloplesiops altivelis), also known as the Comet, is one of the most striking and unique fish available for marine aquariums. Its dark brown to black body is covered in brilliant white spots, while a large false eye (ocellus) on the dorsal fin helps deter predators by mimicking the head of a moray eel.
Despite its dramatic appearance, the Marine Betta is a peaceful and shy species that prefers subdued lighting and plenty of rockwork for shelter. It spends much of the day hiding in caves before emerging to feed and explore, making it an excellent display fish for mature reef and fish-only marine aquariums.
Care Guide
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Scientific Name: Calloplesiops altivelis
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Common Name: Marine Betta / Comet
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Care Level: Moderate
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Temperament: Peaceful
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Diet: Carnivore (mysis shrimp, krill, chopped seafood, silversides, and quality frozen marine foods)
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Reef Safe: Yes, with caution (may consume very small ornamental shrimp or tiny fish)
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Minimum Tank Size: 250 litres
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Water Temperature: 24–27°C
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pH: 8.1–8.4
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Salinity: 1.023–1.026 SG
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Maximum Size: Up to 20cm
Feeding
Feed once or twice daily with a varied diet of frozen mysis shrimp, krill, chopped prawns, squid, and other quality marine foods. Newly introduced specimens may be shy and require patience before accepting prepared foods.
Aquarium Setup
Provide a mature marine aquarium with abundant live rock, caves, and overhangs for hiding. Moderate water flow, stable water parameters, and subdued lighting or shaded areas will help this species feel secure and display natural behaviour.
Compatibility
Suitable with:
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Clownfish
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Tangs
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Wrasses
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Angelfish
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Butterflyfish
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Foxface Rabbitfish
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Most peaceful to semi-aggressive marine fish
Avoid housing with:
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Very small fish that may be viewed as prey
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Tiny ornamental shrimp
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Highly aggressive or boisterous tankmates that may intimidate this shy species
The Marine Betta is a captivating and intelligent marine fish that rewards patient aquarists with graceful behaviour, unique camouflage, and spectacular markings. Its peaceful temperament and striking appearance make it a true centrepiece for established marine aquariums.
