Yellow rockpicker

Where they come from

Yellow rockpickers (Haplochromis flavus) are Lake Victoria cichlids from the rocky shorelines. They spend their days nipping tiny invertebrates and algae off stones, darting in and out of cracks. Males glow a rich yellow that really pops against dark rock.

Setting up their tank

Think rocks first. Piles of stacked stone with narrow gaps let them claim territory and feel safe. Leave open sand or fine gravel up front for cruising and picking.

• Tank size: 55 gallons for a single male with 3-4 females. If you want multiple males or mixed Victorians, 75+ gallons makes life easier.
• Substrate: sand or small-grain gravel. They like to sift and pick.
• Rocks: lots of them. Build tall stacks with caves and line-of-sight breaks.
• Filtration: strong and steady. They are messy cichlids - think canister or a big HOB, plus extra aeration.
• Water: pH 7.6-8.2, KH 6-10, GH 8-12, temp 76-80 F (24-27 C). Stable beats perfect.
• Lighting: moderate. Let some algae grow on the rocks - free snacking.

I like to overfilter and change 30-50% of the water weekly. Clean water keeps colors up and attitudes down.

What to feed them

In the wild they pick at tiny crustaceans, insect larvae, and a bit of algae. In tanks they do well on a varied, high-quality diet with a lean, insectivorous slant.

• Staple: quality cichlid pellets (medium size) formulated for carnivores/insectivores.
• Frozen foods: mysis, daphnia, brine shrimp, chopped krill. Rotate, do not overdo the rich stuff.
• Dry extras: spirulina flake a few times a week to keep digestion moving and color bright.
• Treats: blackworms or bloodworms very sparingly. Too much can bloat them.

Feed small portions 1-2 times a day. I like one light feeding and one day off each week. They beg like puppies, but keeping them a touch hungry helps with bloat prevention and water quality.

How they behave and who they get along with

Semi-aggressive and very territorial around rocks. A single male will rule a pile of stone like a tiny landlord. Females are tougher than they look but still get chased during courtship.

• Best setup: 1 male with 3-5 females. More females spreads the attention.
• Good tankmates: other similarly sized, robust Victorians that are not too similar in color/pattern; Synodontis catfish for cleanup.
• Use caution: flashy peacocks or timid fish that hate being chased. They will get run down.
• Avoid: fish small enough to be a snack, and any species that looks very similar if you plan to breed (hybrid risk).

Breeding tips

They are maternal mouthbrooders and not hard to spawn once settled. The male claims a flat stone, dances, and the female lays a clutch. She scoops the eggs and holds for about 3 weeks.

• Set the ratio: 1 male to 3-5 females.
• Give them a flat rock or slate in the male's territory.
• Watch for a holding female: her throat looks full and she skips meals.
• Incubation: roughly 18-21 days. You can strip at day 12-14 if you know how, or let her release naturally in a quiet tank.
• Fry food: freshly hatched brine shrimp, crushed high-quality flake/pellet, and clean, warm water.
• Recondition mom: after release, feed small, rich meals to help her put weight back on.

Common problems to watch for

• Bloat: shows up as loss of appetite, swelling, white stringy poop. Prevent with clean water, moderate protein, and no heavy feeding of bloodworms or fatty foods.
• Aggression damage: torn fins and stress stripes. Add rock piles and hiding spots, rebalance sex ratios, or remove extra males.
• Hybridization: easy to create mutts by accident. Keep species-only if fry matter to you.
• Water quality swings: high nitrate dulls color and shortens tempers. Big, regular water changes help a lot.
• Ich and external parasites: new fish should be quarantined. Victorians respond well to quick treatment and added aeration.