Calloplesiops altivelis, often referred to as the Comet or Marine Basslet, is a captivating small marine fish prized for its striking black and white spotted pattern and unique behaviour. This species is nocturnal and shy, making it a fascinating addition to a mature reef aquarium.
Care Level: Moderate – requires stable water conditions and a well-established tank.
Temperament: Generally peaceful but may be territorial towards similar species or smaller fish.
Diet: Carnivorous – feeds on meaty foods such as mysis shrimp, brine shrimp, and finely chopped seafood. Feeding should be done in the evening to match its nocturnal activity.
Minimum Tank Size: 120 litres (approximately 30 gallons) to provide adequate space and hiding places.
Reef Compatibility: Yes, with caution – peaceful towards corals but may prey on small invertebrates.
Lighting and Placement: Prefers dimly lit areas with plenty of rockwork and caves to shelter during daylight hours. Moderate water flow is ideal.
Origin: Indo-Pacific region.
Maximum Size: Up to 15 cm (6 inches).
This species is best kept in a tank with plenty of live rock to provide hiding spots and reduce stress. It is a nocturnal hunter and may be shy during the day, so patience is advised when introducing it to your aquarium. Avoid aggressive tank mates and ensure a varied diet to maintain health.
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