Acanthurus olivaceus – Orange-spot Surgeonfish

The Acanthurus olivaceus is an elegant yet robust surgeonfish from the Indo-Pacific. Juveniles display striking yellow and blue hues, while adults transition to a subtle olive-gray coloration with an orange head area. This color development makes it particularly interesting for larger reef aquariums.

Origin: Indo-Pacific
Max size: up to approx. 35 cm
Aquarium: from approx. 800 liters
Temperature: 24–28 °C
Diet: Algae, periphyton, vegetable food, frozen and flake food
Care: Medium

The orange-spot surgeonfish requires plenty of swimming space, stable water parameters, and a predominantly plant-based diet. In sufficiently large aquariums, it is a calm but active reef inhabitant that can be kept well in community with other robust fish.