Quick Info – Jack Dempsey (Rocio Octofasciata)
- Min. Tank Size: 50 gallon
- Max. Size: 10 inches
- Temp: 78°-82°
- pH: 6.5-8
- KH: 5-15
The Jack Dempsey (Rocio octofasciata) is a species of cichlid that is widely distributed across North and Central America (from Mexico south to Honduras). Its common name refers to its aggressive nature and strong facial features, likened to that of the famous 1920s boxer Jack Dempsey.
The fish is a popular aquarium fish, due to its striking appearance and personable mannerisms. It, like most cichlids, is considered “aggressive”, but can get along in a well-populated tank, tending to be more territorial if kept with only a few other fish, therefore allowed to easily establish and defend a “territory” in the tank. Jack Dempsey cichlids can often appear shy, hiding away in cave work. It is recommended that the Jack Dempsey cichlid is provided with plenty of places to hide. They will often claim a cave first and be very aggressive to other tank mates that swim near its home. There is also a blue variant of this fish which commonly known as the blue Jack Dempsey or electric blue Jack Dempsey. This is natural genetic mutation. The blue counterpart is less aggressive, smaller in size and more delicate.