tanganyika

Jelidochromis Regani Nsumbu F1

Julidochromis regani “Nsumbu” (often misspelled Jelidochromis), one of the larger and more assertive rock-dwelling cichlids from Lake Tanganyika.

🐟 Julidochromis regani “Nsumbu” — Species Description
📏 Size

Adult size:

12–15 cm (5–6 inches)

One of the largest Julidochromis species

Females are often slightly larger than males (common in Julidochromis)

Long-bodied, torpedo-shaped profile

🌍 Occurrence (Natural Origin)

Endemic to Lake Tanganyika, East Africa

Nsumbu locality:

Northern part of the lake (Zambian shoreline)

Habitat:

Rocky shorelines and steep rock faces

Crevices, caves, and layered rock structures

Shallow to mid-depth waters

“Nsumbu” is a true geographic locality, not a line-bred variant.

🎨 Appearance

Base color:

Yellow to yellow-gold

Pattern:

Bold black horizontal stripes

Stripe pattern can break into a maze-like design with age

Fins:

Clear to lightly yellow with dark edging

Color intensity increases in dominant adults

🍽️ Diet (Preferred Food)

In the wild:

Omnivorous micro-predator

Feeds on:

Insects

Small crustaceans

Invertebrates picked from rock surfaces

In the aquarium:

High-quality cichlid pellets

Frozen foods:

Mysis shrimp

Brine shrimp

Occasional vegetable-based foods for balance

🧠 Behavior & Temperament

Territorial and assertive

More aggressive than smaller Julidochromis species

Forms strong monogamous pairs

Extremely aggressive during breeding

Will defend a large rock territory

Best kept:

As a bonded pair

In a species tank or with robust Tanganyika fish

🏞️ Preferred Aquarium Conditions

Tank size:

Pair: 200–250 L (55–65 gallons) minimum

pH: 8.0–9.0

Hardness: Hard to very hard

Temperature: 24–26 °C (75–79 °F)

Substrate: Sand

Décor: Large rock piles with narrow caves and crevices

🧾 Quick Summary
Feature Details
Scientific Name Julidochromis regani
Locality Nsumbu
Lake Tanganyika
Adult Size 12–15 cm (5–6 in)
Diet Omnivorous
Temperament Territorial
Breeding Cave spawner, monogamous

⚠️ Compatibility Notes

Avoid mixing with:

Small shell dwellers (Neolamprologus multifasciatus)

Very peaceful Tanganyika species

Possible tankmates (large tanks only):

Altolamprologus calvus / compressiceps

Cyphotilapia frontosa (size-appropriate)

Larger Neolamprologus species

🧠 Expert Tip

Julidochromis are famous for female dominance — don’t be surprised if the female runs the territory and keeps the male in check.