The Arc Eye Hawkfish, Paracirrhites arcatus, or the Arc-Eyed Hawkfish, has a characteristic horseshoe-shaped mark behind its eye. It is primarily a perching fish that will spend lots of its time atop live rock, so plenty should be present. Due to its potential for territorial aggression, the Arc Eye Hawkfish should be introduced into your tank last. It may still harass new additions to the tank, however. As a predator, the Arc Eye Hawkfish will devour small inverts and fish so tankmates should be selected carefully. They take a diet of live or frozen meaty foods and will often scavenge the tank and substate themselves. This is one of the best Hawkfish species to care for as it is hardy and long-lived if housed with the proper tank mates. 

Arc Eye Hawkfish (Paracirrhites arcatus): A Comprehensive Guide for Saltwater Aquarium Enthusiasts

Habitat of the Arc Eye Hawkfish

The Arc Eye Hawkfish, including the Red Sea, the Maldives, and the Great Barrier Reef, is primarily found in the Indo-Pacific region. In its natural habitat, it inhabits areas with rocky or coral-covered substrates, where it can easily perch and hunt for prey.

Reef Compatibility of the Arc Eye Hawkfish

The Arc Eye Hawkfish is considered reef-safe, making it an excellent addition to a reef aquarium. Unlike other hawkfish species that may nip at small invertebrates, the Arc Eye Hawkfish is generally known for its peaceful coexistence with corals and other reef inhabitants.

How Big Does the Arc Eye Hawkfish Get?

These hawkfish typically reach a manageable size, making them suitable for a wide range of aquarium sizes. When fully grown, they typically measure between 4 to 5 inches (10 to 13 centimeters) in length.

How Long Does the Arc Eye Hawkfish Live?

With proper care and a suitable environment, Arc Eye Hawkfish can live relatively long in captivity. On average, they have a 5 to 7 years lifespan, providing aquarists many years of enjoyment.

Diet of the Arc Eye Hawkfish

Arc Eye Hawkfish are carnivorous in their natural habitat and primarily feed on small crustaceans and invertebrates. To ensure their health and vitality in captivity, it is essential to replicate this diet. Their diet should include:

• High-Quality Marine Pellets: High-quality marine pellets should make up the primary component of their diet.
• Frozen Foods: Provide a variety of frozen foods, such as brine shrimp, mysis shrimp, and enriched adult brine shrimp. These foods offer essential nutrients and mimic their natural prey items.
• Live Foods: To encourage natural foraging behavior, occasionally offer live foods like small shrimp or feeder fish.

Is the Arc Eye Hawkfish Available through Aquaculture

Arc Eye Hawkfish are not commonly available through aquaculture. Most specimens found in the aquarium trade are sourced from the wild. When acquiring Arc Eye Hawkfish, purchasing them from reputable suppliers who follow ethical and sustainable collection practices to minimize the impact on wild populations is crucial.

Sexual Dimorphism of the Arc Eye Hawkfish

Sexual dimorphism in Arc Eye Hawkfish is not easily discernible based on physical characteristics, making it challenging to differentiate between males and females through visual cues.

Symbiotic Relationships of the Arc Eye Hawkfish

Arc Eye Hawkfish do not typically form symbiotic relationships with other fish or invertebrates in captivity. However, they are known to be peaceful community members and can coexist with various tank mates.

Juvenile vs. Adult Coloration in the Arc Eye Hawkfish

Juvenile Arc Eye Hawkfish exhibit distinct coloration characterized by a deep red body with a prominent black "arc" or circular marking around the eye, which gives them their common name. As they mature into adulthood, their coloration may become slightly muted, with the red body retaining its vibrancy and the distinctive black arc around the eye remaining prominent.

The Arc Eye Hawkfish's Personality

Arc Eye Hawkfish are generally peaceful and well-suited for community aquariums. However, they are territorial and may display aggression towards other hawkfish or similarly shaped species. Ensure ample hiding spots and territories to prevent conflicts.

Suitable Tank Mates for the Arc Eye Hawkfish

Here are five compatible tank mates that can coexist peacefully with Arc Eye Hawkfish:

• Clownfish (Amphiprion spp.): Clownfish are often compatible with hawkfish and add to the visual appeal of the aquarium.
• Blennies (Blenniidae): Certain blenny species, such as the Midas Blenny (Ecsenius midas), are peaceful and can coexist harmoniously.
• Gobies (Gobiidae): Many goby species are suitable tank mates for the Arc Eye Hawkfish, creating a diverse and lively aquarium.
• Damsels (Pomacentridae): Some damselfish species can be compatible, provided they are introduced into the tank after the hawkfish has established its territory.
• Firefish (Nemateleotris spp.): Firefish are peaceful and add an elegant dimension to the aquarium.

Tank Requirements for the Arc Eye Hawkfish

Providing a suitable environment for the Arc Eye Hawkfish is essential for its well-being. Here are detailed tank requirements to consider:

• Minimum Aquarium Size: A tank with 30 gallons or more capacity is appropriate for a single Arc Eye Hawkfish. However, a larger tank offers more swimming space and accommodates additional tank mates better.
• Aquascaping: Create a habitat that mimics their natural rocky or coral-covered substrate. Include live rock structures, caves, and crevices for them to perch and explore. Providing plenty of hiding spots allows them to feel secure.
• Filtration: Utilize a quality filtration system to maintain excellent water quality.

Other Common Names for the Arc Eye Hawkfish

The Arc Eye Hawkfish is also known as the Flame Hawkfish.

Why People Should Buy the Arc Eye Hawkfish from Saltwaterfish.com

As a result of its unique appearance, peaceful temperament, and suitability for reef aquariums, the Arc Eye Hawkfish is a popular choice among marine aquarium enthusiasts. Purchasing this fascinating species from Saltwaterfish.com ensures access to healthy, ethically sourced specimens, as the company is committed to the well-being of marine life and sustainable practices. By choosing the Arc Eye Hawkfish, aquarists can add an eye-catching and engaging inhabitant to their saltwater aquarium, creating a captivating aquatic ecosystem to enjoy and appreciate.