Redear sunfish Care Guide

The Redear Sunfish (Lepomis microlophus), known for its distinctive red markings on the gill cover, is a popular choice among aquarists. Despite their popularity, they require specific care to maintain a healthy environment.

Tank Setup

Redear Sunfish thrive in a tank that mimics their natural habitat. Set up the aquarium with at least 60 liters per fish to provide ample space, as they are highly territorial, especially during breeding. The tank should have a mix of surface, mid-level, and bottom dwelling areas to accommodate their exploratory nature. Provide a substrate of sandy or gravel bottoms to replicate their breeding preferences.

Water Conditions

Maintain water temperatures between 15°C to 27°C, and keep the pH levels stable between 6.0 and 8.0. Regular water changes are essential to prevent the build-up of harmful substances. As territorially inclined fish, it's important to monitor for signs of stress or aggression which may indicate environmental imbalances.

Feeding

Redear Sunfish have a varied diet, requiring a balance of plant and animal matter. They enjoy a mixture of flakes, pellets, bloodworms, brine shrimp, tubifex worms, and frozen shrimp for protein. Include vegetable matter, algae wafers, and color-enhancing food to ensure a balanced nutritional intake. Occasional treats like daphnia and feeder fish can enrich their diet. Feed them with freeze-dried foods or stick-on tablets for variety.

Social Behavior

Redear Sunfish are generally social and should be kept in groups of at least five to simulate a natural school environment. However, their territorial nature, especially during breeding seasons, demands careful observation to prevent conflicts. Providing ample hiding spots and structured territories within the tank can help reduce aggressive encounters.

Breeding

Redear Sunfish breed during the warmer months, favoring shallow waters with sandy or gravel bottoms for nest building. The male constructs a nest and exhibits courting displays to attract a female. Due to their aggressive breeding behavior, ensure sufficient space to minimize aggressive encounters. The male guards the nest until the eggs hatch, after which the fry can be sustained on micro worms, infusoria, or newly hatched brine shrimp. Gradually introduce larger food items as they grow.

Additional Considerations

Although Redear Sunfish can be kept by hobbyists, they require knowledgeable handling due to their size and aggressive tendencies. Regular monitoring and maintenance of water quality and habitat conditions are crucial in preventing adverse health effects. Their status as 'Least Concern' in conservation emphasizes the importance of maintaining a balanced environment to support their health and well-being in aquariums.