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Labidochromis caeruleus — Yellow Lab

Yellow Lab

Labidochromis caeruleus

Yellow Lab (Labidochromis caeruleus) is a freshwater species with an adult-size reference of about 11 cm. It needs at least 200 litres and 4 individuals, with its social and territorial profile taken into account.

Water Temperature

23 - 28 °C

pH Value

7.5 - 8.5

Water type

Freshwater

Tank level

Bottom and middle

Adult size

11 cm

Minimum tank volume

>= 200 L

Minimum group

>= 4

GH

10 - 25 dGH

KH

5 - 12 dKH

TDS

200 - 495 ppm

Conductivity

313 - 773 uS/cm

Species description

Geographical Origin and Habitat: A freshwater species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.
Taxonomy and Morphology: The accepted scientific name is Labidochromis caeruleus; the verified classification records genus Labidochromis, family Cichlidae, subfamily Pseudocrenilabrinae, order Cichliformes. Historical names remain searchable as synonyms rather than separate species.
Social Behavior: Yellow Lab requires a stable harem with no excess of males. The minimum reference is 4 individuals; sex, maturity and available space can require a more conservative composition. Observe access to food, resting behaviour, chasing and use of shelter. Isolation, persistent competition or aggression means the number, composition or environment needs to be corrected.
Coloration and Sexual Dimorphism: Colour and shape can vary with age, sex, physiological state and environmental conditions. Identification and sexing require recognized species-level characters; one appearance or photograph is not enough.

Care, breeding and tankmates

Aquarium Setup: Yellow Lab needs an aquarium of at least 200 litres, sized for adult body size and a minimum group of 4 individuals. Filtration, shelter and swimming room must match the species and the actual number kept. Volume alone does not make an enclosure suitable: tank shape and length, usable area, oxygenation and the ability to separate territories must reflect adult behaviour.
Diet and Feeding: The recorded diet is omnivorous. Offer appropriately sized foods varied within that category, and adjust quantity and frequency from actual intake, body condition and leftovers. One food or a fixed schedule is not suitable for every age and situation.
Water Quality: Maintain stable, well-oxygenated water appropriate to a freshwater species; the card's reference values are 23–28 °C, pH 7.5–8.5. Verify conditions with reliable tests and size maintenance and filtration to the actual load. Ranges are not automatic thresholds for treatment or rapid chemical correction.
Compatibility and Cohabitation: The cohabitation profile is best kept in a species-focused setup, with a generally semi-aggressive temperament. Keep at least 4 individuals; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
Aquarium Breeding: The recorded reproductive profile is “oviparity”. Breeding should be attempted only with healthy adults, separation capacity and a plan for eggs or young. Do not treat unverified triggers, sex ratios or hatch times as universal for this species.
Risks and Diseases: Use a secure cover and close escape gaps. Prevent problems through quarantine of new arrivals, stable water, appropriate feeding and daily observation. Similar signs can have different causes, so check parameters, history and diagnosis before medication. Follow the product label and qualified aquatic-veterinary advice; there is no universal reduced dose for a species or family.

Geographic origin and distribution

A freshwater species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.

Origin

Africa and Madagascar

Fish profile

Temperament
Semi-aggressive
Yellow Lab has a generally semi-aggressive temperament. Insufficient space, an unsuitable social ratio or incompatible tankmates can substantially change observed behaviour.
Diet
Omnivore
Unlike most Mbuna, they are omnivores with a preference for insects in the wild. Feed them a balanced diet of high-quality cichlid pellets, spirulina, and occasional frozen brine shrimp. Do not feed them mammalian meat, as it can cause digestive issues.
Life expectancy
6-10 years
Adult size
11 cm
Sex ratio
Harem
Yellow Lab requires a stable harem with no excess of males. The reference minimum is 4 individuals and must not be read as permission to overcrowd the aquarium.
Feeding frequency
Twice daily
Feed them small portions two times a day. They are enthusiastic eaters that will beg for food, so resist the urge to overfeed. Removing uneaten food quickly helps maintain excellent water quality.
Bioload
Low to Medium
Electric Yellow Cichlids produce a moderate to high bioload. They are very active and require strong canister filtration to process their waste. Routine weekly water changes are necessary to keep nitrates at a safe level.
Flow
Stagnant
They enjoy moderate water flow and well-oxygenated water. A good powerhead or strong filter return will provide the current they appreciate. Ensure the surface is agitated to maximize gas exchange.
Jump risk
Yes
They have a moderate risk of jumping when startled or during territorial squabbles. A secure, tight-fitting lid is essential to prevent losses. Providing ample rocky hiding places reduces their instinct to flee upwards.
Reproduction
Oviparous
They are prolific maternal mouthbrooders and will breed readily in the home aquarium. The female holds the eggs in her mouth for about three weeks until they hatch. To raise the fry, the holding female is often moved to a separate nursery tank.
Compatibility & tankmates
Species only
The cohabitation profile is best kept in a species-focused setup, with a generally semi-aggressive temperament. Keep at least 4 individuals; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
Tank level
Middle/Bottom
They spend most of their time in the middle and lower levels of the aquarium. They actively explore rocky caves and crevices looking for food. They are vibrant, active swimmers that make full use of the provided hardscape.

Scientific Parameters & Models

FishBase

Window to the official scientific data of the species

FishBase v25.04Data synced on: 06/15/2026
Trophic level
2.6 ± 0.2 se
Resilience
High (less than 15 months)
Phylogenetic uniqueness (PD50)
0.5
Bayesian Length-Weight
a = 0.01445, b = 2.99
VulnerabilityLow vulnerability (10 / 100)
Yellow Lab (Labidochromis caeruleus) Aquarium Care | Atlarium