Masked Julie
Julidochromis transcriptus
Also known as: black-and-white julie
A bold little rock-dweller from Lake Tanganyika with sharp black-and-white contrast.

About
The masked julie (Julidochromis transcriptus) is a compact cichlid native to a surprisingly narrow stretch of coastline along the northwest shore of Lake Tanganyika, where it hugs the rocky shoreline between Luhanga and Makabola in the Democratic Republic of the Congo. It's a small fish, adults rarely push past three inches, but what it lacks in size it makes up for in personality. The patterning is bold and clean: a white or cream base broken up by deep black patches and spots that vary noticeably between populations, which has made it a collector's fish for people who enjoy chasing locality variants. In the wild, masked julies live among rocks, picking microorganisms off surfaces and defending their small territories with characteristic cichlid attitude. They're largely solitary in nature, and that territorial streak carries into the aquarium. Keeping them as a bonded pair tends to work best, and providing plenty of rockwork with caves and crevices goes a long way toward keeping the peace and letting them behave naturally. This is a species for keepers who've had some experience with Tanganyikan cichlids and can maintain the hard, alkaline water conditions the rift lakes demand. Get the setup right and they're rewarding, long-lived fish with real character.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Masked Julie
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Masked Julie get?
- The Masked Julie reaches about 1.5β3" as an adult.
- What size tank does the Masked Julie need?
- A minimum of 55 gallons is recommended for the Masked Julie.
- What water parameters does the Masked Julie need?
- The Masked Julie does best with a temperature of 72β79Β°F, a pH of 8β9.2, hardness around 8β20 dGH.
- Is the Masked Julie aggressive?
- The Masked Julie is aggressive and is best kept alone or with robust tankmates that can hold their own.
- What does the Masked Julie eat?
- The Masked Julie is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Masked Julie live?
- With good care, the Masked Julie typically lives 5-8 years.