Jack Dempsey

Rocio octofasciata

Wild range: Central America (North America)

At a glance: Jack Dempsey care

Compiled reference information. Review the care notes and original sources below.

What temperature is listed for Jack Dempsey?

The compiled profile lists 22.0–30.0 °C for Jack Dempsey (Rocio octofasciata). Check the original sources below for context and differing recommendations.

What tank size is listed for Jack Dempsey?

The profile lists a minimum tank volume of 53.0 US gallons (208.2 liters). Volume alone does not establish suitability; consider dimensions, group size and other inhabitants alongside the full care notes.

What pH is listed for Jack Dempsey?

The compiled profile lists a pH of 6.5–8.0. Review the cited care sources alongside the other water parameters in this profile.

Natural habitat

Jack Dempsey Cichlids thrive in various freshwater conditions, typically found in the rivers and lakes of Central America. They prefer habitats with sandy or gravel substrates, abundant hiding spots, and moderate water flow, allowing them to establish territories.

Where they are found

This species is native to Central America, specifically found in countries including Costa Rica, Honduras, and Mexico. They inhabit rivers and lakes such as the Candelaria, Ulúa, and Usumacinta rivers and Laguna Bacalar and Petén Itzá.

Aquarium care

Providing a 240-liter aquarium is recommended for Jack Dempsey, and the setup should include a substrate of 5 cm of sand or gravel to allow for natural digging behavior. Decorate with large pieces of bogwood and rocks to create territories. The tank should feature vertical structures to provide hiding spots while maintaining areas for open swimming. Regular water maintenance and filter systems are critical to their health due to their relatively high waste production, making the tank environment stable and clean.

Feeding

Jack Dempseys are carnivorous omnivores that require a varied diet. Regularly feed them high-quality cichlid pellets as a staple. Include supplementary foods like frozen bloodworms, brine shrimp, and blanched vegetables to provide essential nutrition and enhance their coloration.

Compatibility

While Jack Dempseys can be housed in a community tank, care must be taken regarding tank mates due to their semi-aggressive nature. They do well with other large, hardy species like Severums but may intimidate smaller or more timid species. Ensure the tank environment allows for plenty of hiding spaces to mitigate aggression from dominant individuals.

Breeding

Breeding in captivity is relatively straightforward with conditions set to around 25°C and a pH of approximately 7.5. Ensure a safe space for the pair during laying.

Sources

Compiled from multiple independent care sheets — not copied from a single site.