The Kribensis — often just called "krib" — is a West African dwarf cichlid prized for being one of the few cichlids genuinely suited to a community tank. Its striking coloration, especially the female's vivid cherry-red belly during breeding, along with its manageable size and easy-to-observe cave-spawning behavior make it a favorite for aquarists wanting cichlid personality without cichlid-scale aggression.
Taxonomy & Classification
Originally described as P. kribensis, the species was renamed Pelvicachromis pulcher ("beautiful belly fish") and remains widely known in the hobby by its old name, shortened to "krib" or "kribensis." It belongs to the family Cichlidae and the genus Pelvicachromis, which contains several similar West African dwarf cichlid species.
| Rank | Classification |
|---|---|
| Order | Cichliformes |
| Family | Cichlidae |
| Genus | Pelvicachromis |
Natural Habitat
Kribensis are native to the coastal and inland waters of southern Nigeria and Cameroon, particularly around the Niger Delta and the outflows of the Ethiop River. Water conditions vary widely across their range, from hard and slightly brackish near the coast to soft and acidic further inland — one reason wild and captive-bred kribs are so adaptable to different tank water chemistries.
Tank Setup
A single pair can be kept in 20 gallons, with 30–50 gallons giving more room to establish territory and reduce aggression toward tank mates, especially when breeding. Use a dark, fine sand or gravel substrate (kribs dig frequently), and provide at least one cave — a flowerpot works well — per pair, plus dense planting or driftwood to create natural territorial borders.
Water Parameters
| Parameter | Ideal Range |
|---|---|
| Temperature | 75–79°F (24–26°C) |
| pH | 6.5–7.5 (tolerates 5.0–8.5 once acclimated) |
| Hardness (GH) | Soft to moderately hard |
| Ammonia / Nitrite | 0 ppm |
| Nitrate | <30 ppm |
Diet & Feeding
True omnivores: offer a high-quality cichlid pellet or flake as a staple, with frozen bloodworms and brine shrimp for protein and occasional blanched vegetables. A varied diet helps bring out their best coloration, especially ahead of breeding.
Tank Mates
Kribensis are one of the more community-friendly cichlids, coexisting well with similarly sized or larger peaceful fish: tetras, rasboras, corydoras, and other sturdy bottom-dwellers. Avoid slow-moving, long-finned species like angelfish, which krib may nip, and avoid other bottom-territorial cichlids that would compete for the same cave space. Expect noticeably increased territoriality — including toward tank mates several times their size — whenever a pair is guarding eggs or fry.
Breeding
Kribensis are easy, attentive cave-spawners and a great introduction to cichlid breeding. The female initiates spawning with a "dancing" display, then lays eggs on the ceiling of a chosen cave for the male to fertilize; eggs hatch in 5–7 days, with free-swimming fry appearing about 5 days later. Both parents guard the brood fiercely. Feed fry powdered flake food and baby brine shrimp.
Common Health Issues
- Ich — white spots; standard freshwater treatment
- Stress from insufficient caves — without enough cave options, breeding pairs may fight over territory; add one cave per pair minimum
- Fin damage — from territorial disputes with incompatible tank mates; monitor closely when introducing new fish
Reviewed for West African dwarf cichlid biology accuracy and community-tank compatibility guidance.
Frequently Asked Questions
Are kribensis good for community tanks?
Yes, more so than most cichlids — they're one of the few species that genuinely works in a peaceful community setup, though they become territorial when breeding.
How can I tell male and female kribensis apart?
Females are smaller with a rounder body and a bright red/pink belly patch, especially vivid when breeding; males are larger with a more pointed dorsal fin.
How big of a tank do kribensis need?
20 gallons minimum for a single pair, with 30+ gallons preferred for more swimming room and reduced territorial stress.