Species Description…

Scientific Name: Cromileptes altivelis

Common Name: Humpback Grouper

Species Group: Grouper

Habitat: Reef Safe with Caution

Care Level: Advanced

Temperament: Predatory

Diet Type: Carnivore

Role in Aquarium: Predator

Max Fish Length: 27 (inches)

Min Aquarium Size: 300 (gallons)

Native Range: Indo-Pacific

Cromileptes Altivelis - The Humpback Grouper

Cromileptes Altivelis (The Humpback Grouper)

Native to the Indo-Pacific, commonly found in coral reefs, lagoons, and coastal drop-offs.
Recognized for its distinctive humpbacked profile, spotted body, and large, rounded fins.
A slow-growing species that is highly sought after for its unique appearance and rarity.
Often found in deeper reef environments, preferring areas with crevices and overhangs.
Best suited for large aquariums with stable water conditions, ample hiding spots, and tankmates of appropriate size.

Carnivorous, preying on small fish, crustaceans, and other invertebrates in its natural habitat.
Requires a protein-rich diet consisting of live or frozen shrimp, squid, and small fish.
May take time to adjust to prepared foods but will eventually accept high-quality marine pellets.
Should be fed multiple times per week to support healthy growth and energy levels.
A varied diet helps maintain its immune system and enhances its coloration.

Prefers deep reef environments with rocky formations, coral outcrops, and sandy bottoms.
Frequently seen hovering near reef ledges or resting within caves.
Aquarium setups should include live rock formations for shelter and to mimic its natural habitat.
Requires high-quality filtration and stable water parameters to ensure long-term health.
Providing shaded areas and a well-oxygenated environment helps reduce stress and encourage natural behaviors.

Optimal water temperature: 74-80°F (23-27°C) for maintaining metabolic stability.
Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
Requires regular water changes and stable conditions to prevent stress-related illnesses.
Not reef-safe, as it may prey on small fish and crustaceans.
Providing an environment with plenty of rock formations and swimming space supports its natural behaviors.

Semi-aggressive and best housed with similarly sized, robust marine species.
Compatible with tangs, large angelfish, and other predatory fish that can coexist peacefully.
Should not be kept with small fish or invertebrates, as they may be mistaken for food.
Best housed in a species-only tank or with carefully selected tankmates to minimize aggression.
Providing multiple hiding areas reduces territorial disputes and helps prevent stress.

A relatively slow-moving but observant species that prefers to stay near rock structures.
Frequently seen resting in crevices, slowly patrolling its territory, or ambushing prey.
More active during feeding times, displaying a strong hunting instinct.
Providing a well-structured tank with caves and open swimming areas enhances its confidence and activity.
Over time, it may recognize its caretaker and exhibit interactive behaviors, especially during feeding sessions.