Jack Dempsey

The Jack Dempsey, Rocio octofasciata, is a classic Central American cichlid with blue-green spangles that become more striking against its darkening adult body. Its alert behaviour and strong sense of territory make it an engaging focal fish. Colour changes with age, mood, and breeding condition, so each individual develops its own appearance.

Aquarium & care

Plan for an adult around 20–25 cm (8–10 in). We recommend at least 75 US gallons (285 L), with a footprint around 120 × 45 cm (4 ft × 18 in), for one adult. A pair or mixed cichlid display benefits from a much larger aquarium. Maintain approximately 24–27°C (75–81°F), pH 6.5–8.0, and stable water conditions. Use a mature biological filter, regular partial water changes, and sand or smooth gravel. Sturdy wood, caves, and flat stones create shelter while leaving open floor space. Plants attached to décor usually withstand digging better than delicate rooted plants.

Feeding

Offer a quality omnivore cichlid pellet, supplemented with frozen aquatic invertebrates, chopped shrimp, and plant-containing foods. Vary the diet, match food size to the fish, and feed portions that are consumed promptly. Check that less dominant individuals can reach food.

Temperament & tankmates

Adults can be territorial, particularly once paired. Small fish and shrimp may be eaten. Robust companions of suitable size can work in a carefully arranged, spacious aquarium, but compatibility is individual. Provide separate retreats and monitor changes as juveniles mature or breeding behaviour begins.

Ordering information

Select from the current options above. Listed measurements are approximate sale sizes, not adult sizes. Contact Las Vegas Exotic Fish to confirm availability and collection or shipping arrangements.