Compatibility and Behavior
Bleeker’s Parrotfish (Chlorurus bleekeri) puts on one of the more dramatic color transformations in the trade, so what you see depends entirely on life stage. Initial-phase fish are typically dark brown with three to four broad pale bars and a lighter tail base, while terminal-phase males develop a green body with pink-edged scales and a distinctive cream-white cheek patch completely outlined in green. Exposed, beak-like dental plates and a relatively straight-edged tail complete the look. That beak is central to how this fish lives: it’s a daytime grazer that feeds by scraping and excavating reef surfaces, consuming algae and the associated microscopic life embedded in them rather than simply browsing loose seaweed. Females may forage in small groups with solitary males nearby. That same scraping is why it shouldn’t be marketed as reliably reef safe, since its powerful grazing can remove material from calcareous surfaces, making ornamental reef placement a concern even when it isn’t targeting living coral. Captive compatibility is poorly documented, so a carefully managed single-parrotfish arrangement with non-bullying companions is the more cautious path than a mixed-parrotfish display.

Aquarium Requirements
This is a specialist, best reserved for an expert keeper prepared to build around its needs, since established husbandry references consider it a poor fit for a conventional home reef. A reliable species-specific minimum tank volume hasn’t been established, and the 3.5 to 7 inch specimens offered should not be assumed to stay suitable for smaller systems, so plan for substantial growth beyond purchase size. A proper setup prioritizes extensive, mature, algae-bearing calcareous rock, generous swimming space, secure rockwork, and sheltered resting areas. Its grazing needs are more complex than a diet of nori or pellets alone, so what makes this fish thrive is ongoing access to appropriate grazing surfaces, paired with close monitoring of food intake and body condition.

Specifications
Approximate Size: Md: 3.5–4.5", Lg: 4.5–5.5", XL: 5.5–7"
Diet: Specialized grazer; algae and associated microorganisms scraped from calcareous reef surfaces
Origin: Indo-Pacific
Care Level: Expert
Reef Safe: Not recommended for ornamental reef aquariums
Temperament: Active grazer; may occur singly or in groups, with captive compatibility poorly documented
Special Considerations: A specialist grazer that depends on extensive mature calcareous rock to graze, rather than nori or pellets alone, so it suits only a large, expert-managed system built around that need. Its scraping can mark calcareous surfaces, so it isn’t recommended for an ornamental reef display.