Electric Blue Jack Dempsey (Rocio octofasciata (blue variety)) is a intermediate-level freshwater fish that needs at least 75 gallons and 75-82°F. A vivid blue cultivated form of the Jack Dempsey. Territorial and not suited to small or peaceful tankmates.
Care facts at a glance
| Scientific name | Rocio octofasciata (blue variety) |
|---|---|
| Family | Cichlidae |
| Origin | Captive-bred |
| Adult size | 10 in |
| Minimum tank | 75 gallons |
| Temperature | 75-82°F |
| pH | 6.5-8.0 |
| Temperament | Aggressive |
| Social behavior | Solitary or pair |
| Swim level | Mid |
| Difficulty | Intermediate |
| Diet | Carnivore leaning omnivore: pellets, frozen foods |
| Typical lifespan | 10-15 years |
Quick tips
- Needs a large tank.
- Keep with similarly sized fish.
San Diego water
Tolerates San Diego's hard, alkaline tap water (pH roughly 7.6-8.6) with slow acclimation and a conditioner that handles chloramine. Learn the numbers in our San Diego tap water guide.
Before you buy
Make sure your tank is cycled (how to cycle a tank), check your numbers with the water testing guide, and use the compatibility guide to check tankmates. These are general ranges; individual fish and local water vary.
Find it at Pet Zone
Pet Zone Tropical Fish is a San Diego aquarium store with two locations. Stock changes daily, so call ahead if you are after a specific species or plant. Shop online at petzonesd.com.
4160 Convoy St, San Diego, CA 92111
(858) 987-0309
Open daily, 10am-6pm
Aquascaping, planted tanks
4266 University Ave, San Diego, CA 92105
(619) 283-1812
Closed Monday; Tue-Fri 10:30am-6pm, Sat 11am-6pm, Sun 11am-4pm
Monster fish, koi