Species Description…

Scientific Name: Cyprinocirrhites polyactis

Common Name: Swallowtail Hawkfish

Species Group: Hawkfish

Habitat: Reef Safe with Caution

Care Level: Intermediate

Temperament: Peaceful

Diet Type: Carnivore

Role in Aquarium: Community Fish

Max Fish Length: 5 (inches)

Min Aquarium Size: 30 (gallons)

Native Range: Indo-Pacific

Cyprinocirrhites Polyactis - The Swallowtail Hawkfish

Cyprinocirrhites Polyactis (The Swallowtail Hawkfish)

Native to the Indo-Pacific, commonly found in coral reefs, drop-offs, and rocky formations.
Recognized by its vibrant yellow body, elongated shape, and sharp dorsal spines.
Unlike other hawkfish species, it tends to swim more actively in the water column rather than perching on corals.
A peaceful species compared to other hawkfish, making it more compatible with a variety of tankmates.
Best suited for aquariums with stable water conditions, live rock structures, and open swimming areas.

Carnivorous, primarily feeding on small fish, planktonic crustaceans, and shrimp in the wild.
Thrives on a diet of frozen mysis shrimp, brine shrimp, finely chopped seafood, and high-protein pellets.
Readily accepts prepared foods but benefits from occasional live food offerings.
Should be fed multiple small meals per day to support its active lifestyle.
A well-balanced diet ensures strong coloration and overall well-being.

Prefers reef-associated environments with moderate water flow and ample hiding spots.
Often found near coral ledges, rocky formations, or open water areas where it can hunt.
Aquarium setups should include live rock for shelter while also providing open swimming space.
Requires high-quality filtration and stable water conditions to remain healthy.
Providing shaded areas and reef structures helps create a naturalistic environment.

Optimal water temperature: 74-80°F (23-27°C) to maintain overall health.
Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
Requires consistent water changes and strong filtration to prevent water quality deterioration.
Reef-safe in most cases but may prey on very small fish and shrimp.
Providing a varied environment with rockwork and open water areas supports natural behavior.

Peaceful compared to other hawkfish species but may show minor territorial behavior.
Compatible with tangs, wrasses, clownfish, and other reef-safe fish.
Best housed with fish that are similar in size and temperament to avoid predation.
Should not be housed with very small fish or delicate shrimp that may be mistaken for prey.
Providing adequate swimming space and rockwork helps maintain a stress-free environment.

An active swimmer that frequently moves between open water and rock structures.
More social than other hawkfish, often seen swimming rather than perching.
Develops confidence in a well-established aquarium with plenty of hiding areas.
Providing rockwork and open space encourages its natural movement patterns.
Over time, it may recognize its caretaker and display interactive behaviors, particularly during feeding.