Marine Betta Fish

The Marine Betta, *Calloplesiops altivelis*, is a captivating and unique fish, often mistaken for a member of the Betta family due to its common name, but it is actually a type of Grouper. Its striking appearance features a dark, velvety body adorned with numerous bright white spots, creating a starry night effect. A prominent false eyespot is located near the tail, believed to deter predators by mimicking the head of a larger fish.

A minimum tank size of 50 gallons is recommended to provide adequate space and hiding places for this shy and nocturnal species. Live rock is essential, offering crevices and caves where the Marine Betta can retreat during the day. While generally peaceful, they are predatory and will consume smaller fish and invertebrates that can fit into their mouths. Therefore, careful consideration should be given to tank mates.

The Marine Betta is a carnivore and its diet should consist of a variety of meaty foods. Offerings such as mysis shrimp, frozen shrimp, silversides, and other high-quality frozen or live marine foods are readily accepted. They are ambush predators and may initially be hesitant to feed in the open, preferring to hunt in the dark.

In a home aquarium, the Marine Betta typically reaches a size of around 6-8 inches. There are no readily apparent visual differences between males and females. Breeding in captivity is rare and challenging.

Quick Facts

• Scientific Name: Calloplesiops altivelis
• Care Level: Beginner
• Temperament: Peaceful
• Diet: Carnivore
• Reef Compatibility: Reef Safe
• Region of Origin: Indo-Pacific
• Maximum Adult Size: 8"
• Recommended Tank Size: 75 gallons