Blotched Anthias

Blotched Anthias (Odontanthias borbonius) Care Level: Moderate Temperament: Peaceful Colour Form: Pink, Yellow, Purple with Blotched Patterns Diet: Carnivore Reef Compatible: Yes Water Conditions: 22-26°C, dKH 6-12, pH 7.8-8.4, sg 1.020-1.025 Max Size: 16 cm Family: Serranidae Minimum Tank Size: 300 litres Overview The Blotched Anthias (Odontanthias borbonius), also known as the Borbonius Anthias or Blotchy Anthias, is a rare and stunning reef fish. This deep-water species is admired for its unique colouration, displaying a pale pink to lavender body adorned with large, irregular yellow or orange blotches. Its delicate appearance and shy behaviour make it a prized addition to well-established aquariums. Native to deeper reef environments, it is typically found at depths of 50 to 200 meters in the Indo-Pacific. Behaviour and Habitat Blotched Anthias are peaceful and relatively shy, often retreating to caves or overhangs when startled. In the aquarium, they appreciate dimly lit areas and plenty of hiding spots created by rock structures. While generally non-aggressive, they may display slight territoriality toward smaller fish of similar shape. They are best kept singly or in harems with one male and multiple females in larger systems. Tank Requirements This species requires a tank of at least 300 litres with ample live rock for hiding and grazing. As a deep-water fish, they prefer subdued lighting or areas shaded by rockwork. A stable temperature and excellent water quality are crucial, as they are sensitive to fluctuations. Moderate to strong water flow helps replicate their natural environment. Diet Blotched Anthias are carnivores that feed primarily on zooplankton in the wild. In captivity, they should be provided with: Frozen mysis shrimp Enriched brine shrimp High-quality marine carnivore pellets Finely chopped seafood such as squid or fish Frequent small feedings, at least 2-3 times daily, are necessary to meet their high metabolic needs. Care Tips Introduce them into a mature tank with stable water parameters. Provide ample hiding spots to help reduce stress and encourage natural behaviour. Feed a varied diet multiple times daily to support their health and vibrant colouration. Avoid housing them with overly aggressive tank mates that may out compete them for food. Reef Compatibility Blotched Anthias are entirely reef-safe, posing no threat to corals, invertebrates, or other reef inhabitants. Their peaceful nature and striking appearance make them ideal for large reef tanks. Compatibility Blotched Anthias can coexist with other peaceful tank mates, such as gobies, wrasses, clownfish, and tangs. Avoid pairing them with highly aggressive fish or overly active species that may stress them. Final Thoughts The Blotched Anthias is a rare and captivating fish that brings a touch of elegance and uniqueness to any aquarium. While their care requires some experience due to their dietary needs and sensitivity, their striking appearance and peaceful demeanour make them a rewarding choice for aquarists who can provide the proper environment.