Kribensis

Where kribs come from (and why it matters)

Kribensis (Pelvicachromis pulcher) come from West Africa—slow-ish rivers and streams with roots, leaf litter, and lots of little hiding spots. That’s the whole vibe you want to copy in the tank: cover, caves, and broken lines of sight.

Setting up their tank

Kribs are beginner-friendly because they’re not fragile, but they do have opinions about their space. Give them structure and they settle in fast. A 20-gallon long works great for a pair; bigger is easier if you want tankmates.

• Tank size: 20 long for a pair; 30+ if you want a calmer community setup
• Filtration: anything steady; they don’t love a washing-machine current
• Substrate: sand is my favorite (they sift and dig), but fine gravel works too
• Decor: at least 2–3 caves (coconut huts, rock caves, clay pots) plus wood/plants to break up sightlines
• Plants: hardy stuff like Java fern, Anubias, Crypts—expect a bit of digging around the base
• Lighting: moderate; floating plants help if they’re acting shy

For water, they’re flexible. Mine have done well in neutral community water. If your tap is rock-hard, they’ll still live fine, but breeding is easier in softer, slightly acidic water.

• Temperature: 24–27°C / 75–81°F
• pH: ~6.5–7.5 is a safe target for most setups
• Hardness: soft to moderately hard; they adapt better than many cichlids

What to feed them

Kribs eat like little pigs and color up nicely on a mixed diet. You don’t need anything fancy—just variety. Feed small portions and watch them during meals, because they can get a little bossy.

• Staple: quality pellets (cichlid or community) and/or good flakes
• Frozen: bloodworms, brine shrimp, daphnia (great for conditioning)
• Live (optional): baby brine shrimp, grindal worms—awesome if you’re trying to breed them
• Veg extras: spirulina flakes, blanched zucchini/peas now and then

Behavior and tankmates (the real story)

Most of the time kribs are calm, curious fish. Then they decide it’s family season and suddenly they’re tiny bouncers guarding a nightclub. The key is planning around that switch.

In a community tank they can work really well, but only if you give them space and hiding spots. Bottom-dwellers that want the same real estate can get pushed around—especially during spawning.

• Good tankmates: mid/upper swimmers like tetras (bigger ones), rainbowfish, danios, Congo tetras, barbs that aren’t fin-nippy
• Usually okay with: peaceful gouramis, larger rasboras, livebearers (watch the fry situation)
• I’d avoid: other cave-spawning cichlids in small tanks, super shy fish, long-finned fish they might harass, and most bottom dwellers in tight setups (cories can get stressed if the kribs are nesting)

Breeding tips (they’ll probably do it anyway)

Kribs are one of those fish that make you feel like a breeding genius. Give them a cave and good food and they often handle the rest. The female’s belly gets bright and she’ll start showing off in front of the cave—classic krib flirting.

• Give choices: multiple caves with different entrances (they pick what they like)
• Conditioning: frozen foods for a week or two + frequent small water changes
• If you want more fry: slightly softer water often helps (not mandatory, just helpful)
• Expect parenting: both parents usually guard, and they’ll herd the fry around like sheepdogs

If you’re breeding in a community tank, don’t be surprised if the parents raise a smaller batch. The cool part is watching the behavior; the annoying part is the parents trying to evict everyone else from the neighborhood.

Common problems to watch for

Most krib issues aren’t mysterious diseases—they’re usually “tank politics” or stress from the setup. If they’re hiding nonstop or staying washed-out, check for aggressive tankmates, too-bright lighting, or a lack of cover.

• Aggression spikes during breeding: chasing, nipping, cornering tankmates
• Digging and plant uprooting: especially around cave entrances
• Bloat/constipation: often from overfeeding rich foods (easy on bloodworms every day)
• Ich after a temperature swing or new fish: they’re hardy, but stress still gets them
• “Mouthy” injuries: scraped faces from digging under rocks or squeezing into sharp decor