Edit Julidochromis regani

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Name

Scientific name

Julidochromis regani

Described by

Not recorded

Family

Cichlidae

Summary

Regan's julie, Julidochromis regani, is the largest species of Julie, a cichlid endemic to Lake Tanganyika. It reaches 30 cm but rarely gro…

Size and aquarium

Maximum size

300mm, standard length

Tank size

Minimum length 120 cm, Minimum depth 30 cm, Minimum height 30 cm

Water

Temperature and pH

Temperature 23–27°C, pH 7.5–9

Hardness

10–25dGH

Conductivity

Not recorded

Behaviour

Temperament

Territorial

Community suitability

Not recorded

Where it lives

Countries

Not recorded

Supporting text

Etymology

Not written yet

Distribution

Endemic to Lake Tanganyika.

Habitat

It is widespread in the lake and is less of a rock dweller than other members of the genus. It's more often found over sandy bottoms with scattered rocks, alth…

Aquarium size

120 ∗ 30 ∗ 30 cm48 ∗ 12 ∗ 12 in - ~108 litres~29 US gal for a single mated pair.

Maintenance

Should be housed in a Lake Tanganyika biotope setup, with piles of rocks arranged to form caves and areas of open water between. A sandy substrate is preferabl…

Water conditions

Temperature: 23 – 27 °C73 – 81 °F pH: 7.5-9.0 Hardness: 10-25°H

Diet

Live and frozen foods should comprise a large proportion of the diet. Dried foods can be fed, but less often. Some vegetable matter, such as spirulina or blanc…

Behaviour and compatibility

Territorial but can be maintained successfully with other Tanganyikan cichlids such as Altolamprologus and Cyprichromis species. It should be kept as a pair un…

Sexual dimorphism

The genital papillae of males is more extended and pointed than that of females. Adult females are also larger than males.

Reproduction

Easy but patience is required. It's best to buy a group of young fish and allow them to pair off naturally. Once a pair forms (this may take a year or more) th…

Easy but patience is required. It's best to buy a group of young fish and allow them to pair off naturally. Once a pair forms (this may take a year or more) the other fish should be removed as the pair will remain together for life. Unfortunately buying an adult male and female will not guarantee a pair and often results in the female being harassed to death. The aquarium itself should be at least 48" in length and set up as suggested above. The pH should be around 8.2-9.0 and the temperature 25 – 26.5 °C77 – 80 °F.

The pair will spawn very secretively in a cave, with the female laying up to 300 eggs (usually less) scattered on the wall or roof of it. It is often very difficult to tell if they have spawned until the fry are seen. Once spawning has occured, the female will tend to the eggs while the male guards the area around the cave. Once the fry hatch you may wish to remove the parents, although they will rarely be harmed.

The fry may still have some yolk sac remaining when they are released and do not need to be fed until this has disappeared. If they are released with no yolk sac, which happens occasionally, you can start to feed immediately. They are large enough to take brine shrimp nauplii straight away. Brood care is quite long-lived and they can remain with the parents until they are around 1" in length, at which point they should be removed as the adults may turn on them. The adults may spawn again whilst the brood are still in the aquarium and will form a nuclear family with the older fry remaining in the parents' territory and tending to new broods of eggs. Interestingly, during the period in which she is caring for the fry the female sometimes becomes the dominant fish.

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Where does this come from?

My own experienceFor example, I've kept twelve in a planted 60 cm tank since March 2024.A website I sawFor example, an IUCN Red List assessment, a museum catalogue or a FishBase page.A paperFor example, Marshall et al. (2011), Water temperature differences in interfluvial palm swamp habitats of Paracheirodon axelrodi and P. simulans.A book, or something not onlineFor example, Tappin (2010), Rainbowfishes: their care and keeping in captivity.Something already on the profileFor example, the Behaviour and compatibility section already says this.

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DOI

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Title

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Authors

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Year

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Pages

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Anything worth adding

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Notes

Julidochromis are commonly known as "Julies" in the hobby. Despite being the largest species of Julie this is actually the least aggressive member of the genus…

References

No references

Name

Scientific name

Described by

Family

Summary

Size and aquarium

Maximum size

Tank size

Water

Temperature and pH

Hardness

Conductivity

Behaviour

Temperament

Social needs

Community suitability

Where it lives

Countries

Supporting text

Etymology

Distribution

Habitat

Aquarium size

Maintenance

Water conditions

Diet

Behaviour and compatibility

Sexual dimorphism

Reproduction

Notes

References

References