Regan's Julie, scientifically known as Julidochromis regani, is a distinctive species of cichlid native to the rocky shores of Lake Tanganyika in East Africa. This fish is admired for its elongated body and striking horizontal stripes, making it a popular choice for aquarists interested in African cichlids.

Julidochromis regani has a slender, elongated body that can display various colorations from light yellow to a deeper gold, all accented by thin, dark horizontal stripes that extend from the head to the tail. This striking patterning not only makes them visually appealing but also helps them blend into the rocky environments of their natural habitat. Their body shape allows them to navigate and inhabit the narrow crevices and caves found in their lake environment.

In the aquarium, Regan's Julie thrives best in a setup that mimics the rocky landscapes of Lake Tanganyika. This includes plenty of rock formations and caves that provide hiding spots and potential breeding sites. The substrate should consist of fine sand or gravel. It’s important to maintain high water quality and stability, with parameters close to their natural alkaline habitat, including high pH and hardness.

Regan's Julie is known for its territorial behavior, especially during breeding. While generally peaceful towards other species, they can be aggressive towards their own kind and similar-looking fish, particularly in smaller tanks. Therefore, it's advisable to keep them in a species-specific tank or a large community tank with other Tanganyikan cichlids that do not compete for the same niches.

Their diet should include a variety of foods to ensure balanced nutrition. They benefit from high-quality cichlid pellets, flakes, and occasional live or frozen foods such as brine shrimp and bloodworms. Vegetable matter should also be included to replicate their omnivorous diet in the wild.

Breeding Regan's Julie can be quite rewarding. They are substrate spawners, typically laying their eggs in the crevices of rocks or in caves. They exhibit fascinating parental behaviors, with both parents actively protecting the nest and caring for the fry. The breeding environment should be well-structured with ample hiding spots to reduce stress and aggression.

Overall, Regan's Julie is an excellent choice for aquarists looking to delve into the world of Lake Tanganyika cichlids. Their unique appearance and interesting behaviors make them a captivating species for a dedicated cichlid tank. With appropriate care and environment, they can be a joy to keep and observe.