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Fish

Regan's julie

Julidochromis regani
French name : Julidochromis regani

Julidochromis regani, the largest of the julies, commonly reaches 12-13 cm and inhabits rocky and intermediate zones throughout Lake Tanganyika, including the well-known Kipili populations. It has an elongated pike-like body marked by clean horizontal dark stripes on a golden ground. It grazes invertebrates and micro-crustaceans from rock surfaces and shelters in crevices. Like other julies it forms bonded, highly territorial pairs, so keep one pair in a tank of at least 150 litres with abundant piled rock and caves; allow generous space if housing other Tanganyikan cichlids. Water should be hard and alkaline, pH 8-9, temperature 24-27 C, with strong filtration and stability. Feed a carnivorous mix of frozen mysis, brine shrimp, cyclops and quality prepared foods, with occasional vegetable matter. A cave spawner that lays small clutches on rock ceilings and guards fry diligently.

Water
Freshwater
Origin
Lake Tanganyika, East Africa
Adult size
13 cm
Diet
Carnivore
Temperament
Semi-aggressive
Difficulty
Intermediate
Regan's julie (Julidochromis regani)
Illustration

Water parameters

Temperature24 – 27 °C
pH8 – 9
Carbonate hardness (KH)10 – 20 °dKH
General hardness (GH)8 – 20 °dGH

Tank & stocking

Minimum tank volume150 L
Volume budget per individual 50 L — adds up with tank-mates

“Minimum tank volume” is a reasonable floor, not an absolute limit. The per-individual budget is used by the Aqua app to estimate how heavily a tank is stocked.

Frequently asked questions

What size aquarium does Regan's julie need?

Provide at least 150 litres to keep Regan's julie in good conditions.

What water parameters does Regan's julie need?

A temperature of 24–27 °C, pH 8–9.

Is Regan's julie peaceful or aggressive?

Its temperament is semi-aggressive.

What does Regan's julie eat?

Its diet: carnivore.

How big does Regan's julie get?

Around 13 cm as an adult.

Is Regan's julie suitable for beginners?

Care level: intermediate.

Planning a tank with Regan's julie?

AquaTender turns these parameters into live advice: it checks whether your tank is big enough, how heavily it's stocked, and whether your fish are compatible — then tracks water tests, photos and maintenance for you.

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Fish from the same biotope

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