Species Description…

Scientific Name: Apogon pseudomaculatus

Common Name: Twospot Cardinalfish

Species Group: Cardinalfish

Habitat: Reef Safe

Care Level: Beginner

Temperament: Peaceful

Diet Type: Carnivore

Role in Aquarium: Schooling Fish

Max Fish Length: 3 (inches)

Min Aquarium Size: 30 (gallons)

Native Range: Western Atlantic, including the Gulf of Mexico and the southeastern coast of the United States

Apogon Pseudomaculatus - The Twospot Cardinalfish

Apogon Pseudomaculatus (The Twospot Cardinalfish)

Native to the Western Atlantic, commonly found in rocky reefs, coral formations, and near wreck sites.
Characterized by a pale body with two distinctive dark spots on either side, providing natural camouflage.
A nocturnal species that remains hidden during the day and becomes more active at night.
Often observed in small schools or pairs, preferring to stay close to crevices and shaded areas for protection.
Well suited for marine aquariums due to its peaceful temperament and striking appearance.

Carnivorous, feeding primarily on zooplankton, small crustaceans, and tiny fish in the wild.
Readily consumes frozen and live foods such as mysis shrimp, brine shrimp, and copepods.
Can be trained to accept high-quality marine pellets and flakes when introduced gradually.
Requires multiple small feedings throughout the day to maintain energy levels and support their active metabolism.
Providing a varied diet enhances their natural coloration and immune system.

Typically found near coral-rich environments and rocky reef structures where they can hide from predators.
Prefers moderate water movement with stable conditions.
Aquariums should include live rock formations, overhangs, and shaded spaces to mimic their natural habitat.
Thrives in well-maintained reef tanks that offer both open swimming areas and hiding spots.
Creating an environment with natural cover reduces stress and encourages natural behaviors.

Optimal water temperature: 74-80°F (23-27°C) to ensure a stable environment.
Ideal pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
Requires high water quality with effective filtration to minimize ammonia and nitrate levels.
Regular water changes and monitoring of parameters help maintain a stress-free environment.
Providing a peaceful aquarium with minimal aggression enhances longevity and well-being.

An ideal addition to community reef tanks due to its non-aggressive nature.
Compatible with other peaceful reef fish, including gobies, wrasses, tangs, and angelfish.
Best kept in small groups to encourage natural schooling instincts.
Should not be housed with large or aggressive predators that may view them as prey.
Coexists well with invertebrates such as shrimp and small crabs.

Typically remains near hiding spots during the day, venturing out at night to forage.
Prefers to stay in small groups, displaying synchronized swimming patterns.
Can become more confident when housed with similar species or in a well-structured environment.
Providing shaded areas and a structured tank setup supports their natural behaviors.
Becomes more active under dim lighting, making it an excellent addition to aquariums with evening viewing setups.