Oxymonacanthus halli, known as the Red Sea Filefish, is a captivating species native to the Red Sea. Recognisable by its vibrant colours and delicate body shape, it is a sought-after addition for marine aquarists with experience in specialised fish care.
Care Level: This species is considered challenging to keep due to its specialised diet and sensitivity to water quality. It is recommended for advanced hobbyists.
Temperament and Compatibility: Generally peaceful but may become territorial towards conspecifics or similar species. Compatible with other peaceful reef inhabitants; however, caution is advised when housing with aggressive or predatory fish.
Diet: Primarily feeds on coral polyps and specific sessile invertebrates in the wild. In captivity, it requires a carefully managed diet including specialised frozen and live foods such as mysis shrimp, enriched copepods, and coral polyps substitutes. Supplementation with high-quality marine algae and prepared diets designed for filefish is recommended.
Minimum Tank Size: A minimum of 150 litres (40 gallons) is advised to provide ample swimming space and maintain stable water parameters.
Lighting and Water Flow: Moderate lighting and gentle to moderate water flow replicate natural reef conditions and support the health of both the fish and any live corals present.
Placement: Provide plenty of live rock with crevices and coral growth to mimic natural habitat and offer grazing opportunities. Avoid overcrowding to reduce stress.
Origin: Native to the Red Sea region.
Maximum Size: Typically grows up to 12 cm (4.7 inches) in length.
Reef Safety: With caution – may nip at coral polyps, so suitable only for established reef tanks with hardy coral species or fish-only reef setups.
Due to its specialised care requirements, Oxymonacanthus halli is best suited for marine aquarists prepared to provide dedicated attention to diet and water quality.
