Species Description…

Scientific Name: Antennarius coccineus

Common Name: Scarlet Frogfish

Species Group: Frogfish

Habitat: Reef Safe with Caution

Care Level: Advanced

Temperament: Predatory

Diet Type: Carnivore

Role in Aquarium: Predator

Max Fish Length: 6 (inches)

Min Aquarium Size: 30 (gallons)

Native Range: Indo-Pacific, including the Red Sea, Indonesia, and the Great Barrier Reef

Antennarius Coccineus - The Scarlet Frogfish

Antennarius Coccineus (The Scarlet Frogfish)

Native to the warm, shallow waters of the Indo-Pacific, including reefs, lagoons, and coastal rocky areas.
Recognized for its warty, textured skin that allows it to blend seamlessly with surrounding coral and rocks.
A skilled ambush predator that utilizes its specialized lure (illicium) to attract unsuspecting prey.
Highly valued among aquarists for its cryptic appearance and unique hunting behavior.

Strictly carnivorous, preying on small fish, shrimp, and crustaceans.
Relies on live food initially but can be conditioned to accept frozen foods such as silversides or krill.
Due to its sedentary nature, it does not require frequent feeding, but portions should be appropriate to its size.
Overfeeding can lead to obesity and digestive complications, so feed sparingly and monitor intake.

Typically found among coral rubble, sponge beds, and rocky outcroppings where it remains well-camouflaged.
Prefers calm waters with minimal current to allow it to remain still for long periods.
Aquariums should contain live rock formations, caves, and shaded areas to replicate its natural environment.
Due to its sedentary lifestyle, it does not require vast open swimming space but benefits from a well-structured tank.

Water temperature should be maintained between 74-80°F (23-27°C).
Requires a pH level of 8.1-8.4 and a salinity range of 1.020-1.025.
Highly sensitive to water quality fluctuations, making proper filtration and maintenance essential.
Regular monitoring of ammonia and nitrate levels is crucial to prevent toxicity buildup.
Minimal tank movement and a stress-free environment encourage healthy behavior and coloration.

Best kept as a solitary specimen or with other large, slow-moving fish.
Anything that fits in its mouth, including smaller fish and crustaceans, is considered prey.
Not recommended for reef tanks with small, delicate invertebrates or active tank mates.
Can coexist with other frogfish in large, well-structured aquariums but may exhibit cannibalistic tendencies.

A master of disguise, it remains motionless for extended periods, waiting for prey to come within striking distance.
Uses its elongated dorsal spine as a lure, waving it like a worm to entice potential meals.
Capable of rapid expansion of its mouth, swallowing prey whole in a fraction of a second.
Providing an environment rich in live rock and shadows helps maintain its natural behaviors and hunting efficiency.