Regan's julie
Julidochromis regani
A slender striped Tanganyika cichlid that lives among rocks, often swimming upside down along cave roofs; keep strictly as one pair.
Key facts
- Body length
- 5.1 in without fins
- Minimum tank
- 34 gallons
- Group
- 2+
- Temperament
- Semi-aggressive
- Care level
- 3 / 5
- Lifespan
- Not well documented
- Diet
- Cichlid pellets, frozen mysis, brine shrimp and cyclops
- Origin
- Lake Tanganyika, East Africa
- Hardier than38%
- Bigger than67%
- Calmer than28%
Water: their range vs yours
Regan's julie tank mates
- Neon tetraGets along in shared water.Good mates
- Harlequin rasboraGets along in shared water.Good mates
- Fancy guppyGets along in shared water.Good mates
- Panda corydorasGets along in shared water.Good mates
- OtocinclusGets along in shared water.Good mates
- BettaGets along in shared water.Good mates
- AngelfishGets along in shared water.Good mates
- Tiger barbGets along in shared water.Good mates
- Black neon tetraGets along in shared water.Good mates
- Black widow tetraGets along in shared water.Good mates
- Blood parrot cichlidGets along in shared water.Good mates
- Bristlenose plecoGets along in shared water.Good mates
- Cherry shrimpRegan's julie eats dwarf shrimp: Cherry shrimp (PROP).Risky
- Amano shrimpRegan's julie eats dwarf shrimp: Amano shrimp (PROP).Risky
- Chinese algae eaterTwo territorial bottom-dwellers: need ≥ 10350 cm² of floor, tank has 5612 cm².Risky
- Convict cichlidTwo territorial bottom-dwellers: need ≥ 6300 cm² of floor, tank has 5612 cm².Risky
- DemasoniTwo territorial bottom-dwellers: need ≥ 9000 cm² of floor, tank has 5612 cm².Risky
- Fairy cichlidTwo territorial bottom-dwellers: need ≥ 7200 cm² of floor, tank has 5612 cm².Risky
- Blue dolphin cichlidBlue dolphin cichlid can eat Regan's julie: prey body depth 0.8 cm ≤ mouth 6.3 cm.Avoid
- Iridescent sharkIridescent shark can eat Regan's julie: prey body depth 0.8 cm ≤ mouth 32.5 cm.Avoid
- OscarOscar can eat Regan's julie: prey body depth 0.8 cm ≤ mouth 12.3 cm.Avoid
- African clawed frogAfrican clawed frog should only be kept in a single-species tank.Avoid
- Marbled crayfishMarbled crayfish should only be kept in a single-species tank.Avoid
- AxolotlAxolotl can eat Regan's julie: prey body depth 0.8 cm ≤ mouth 7.5 cm.Avoid
How we check
The numbers the tank model uses for Regan's julies: water as ideal and tolerated ranges, bioload from adult mass, space, flow and how they act on other species.
- Standard length
- 13 cm (TL)
- Adult mass
- 11.63 g
- Bioload at 25 °C
- 5.01 BU
- Min. water
- 108 L net
- Min. footprint
- 120 × 30 cm per pair
- Group
- 2+ (best 2)
- Swims in
- bottom
- Flow
- moderate
- Body / fins
- slender eel, normal fins
- Diet type
- omnivore meat
- Fin nipper
- none
- Sensitive to
- —
Sources: Seriously Fish: Julidochromis regani · FishBase: Julidochromis regani
Care notes
Regan's julies grow to about 5 inches and hug the rockwork, sliding along crevices and cave ceilings. They spawn secretly inside caves and are the calmest member of the genus.
Keep a single pair in a 4-foot tank of 29 gallons or more with plenty of rock grottos. They are aggressive towards their own kind, and shrimp are likely to be eaten.
Questions
What size tank does a regan's julie need?
At least 34 gallons (108 litres of water after decor). Adults reach about 5.1 inches without fins.
How many Regan's julies should be kept together?
Keep at least 2, ideally 2 or more: fewer feel exposed and hide or turn nippy.
What water do Regan's julies need?
73–77 °F, pH 8.2–9 and 10–14 dGH. Regan's julies come from Lake Tanganyika, East Africa.
How long do Regan's julies live?
Not well documented with good care.
What fish can live with Regan's julies?
Good tank mates include Neon tetra, Harlequin rasbora, Fancy guppy, Panda corydoras and Otocinclus. Each is checked both ways for size, fin nipping, temperament, territory and shared water.