malawi

Pseudotropheus Crabro

🐟 Pseudotropheus crabro "Bumblebee Cichlid" — Species Description
📏 Size

Adult size: 12–15 cm (5–6 inches)

Robust, heavy-bodied Mbuna

Males grow slightly larger and bulkier than females

🌍 Occurrence (Natural Origin)

Endemic to Lake Malawi, East Africa

Naturally found around:

Chisumulu Island

Northern rocky reefs

Habitat:

Rocky caves and crevices

Often associated with catfish nesting sites

Shallow to mid-depth rocky zones

Pseudotropheus crabro is a true wild species, not a hybrid or line-bred fish.

🎨 Appearance

Juveniles & females:

Bright yellow body

Bold black vertical bars (bumblebee pattern)

Adult dominant males:

Lose yellow coloration

Turn dark blue to almost black

Faint or disappearing barring

This dramatic ontogenetic color change is unique among Mbuna

🍽️ Diet (Preferred Food)

In the wild:

Opportunistic omnivore

Special behavior:

Enters catfish nests to feed on parasites and eggs

Also consumes:

Small crustaceans

Insect larvae

Algae and organic debris

In the aquarium:

High-quality Mbuna pellets with vegetable base

Spirulina flakes

Moderate protein:

Mysis shrimp

Brine shrimp

⚠️ Avoid excessive animal protein. Despite being more omnivorous, crabro is still prone to Malawi bloat if overfed rich foods.

🧠 Behavior & Temperament

Highly aggressive and territorial

Dominant males are especially hostile

Aggression increases with age and dominance

Best kept:

In large Mbuna tanks

With equally aggressive species

Not suitable for peaceful Mbuna or mixed Hap tanks

⚠️ Juveniles may appear peaceful, but aggression increases dramatically as they mature.

🏞️ Preferred Aquarium Conditions

Tank size: Minimum 350–400 L (90–105 gallons)

pH: 7.8–8.6

Hardness: Moderate to hard

Temperature: 24–28 °C (75–82 °F)

Substrate: Sand

Décor: Heavy rockwork with deep caves and broken sight lines

🧾 Quick Summary
Feature Details
Scientific Name Pseudotropheus crabro
Common Name Bumblebee Cichlid
Group Mbuna
Adult Size 12–15 cm (5–6 in)
Origin Lake Malawi
Diet Omnivorous (veg-based with protein)
Temperament Very aggressive
Best Setup Large, aggressive Mbuna aquarium
⚠️ Compatibility Insight

Possible tankmates (with caution):

Melanochromis auratus

Melanochromis kaskazini

Robust Metriaclima species

Do NOT mix with:

Pseudotropheus acei

Labidochromis species

Cynotilapia species

Any Hap or Peacock cichlids

🔎 Expert Note

Pseudotropheus crabro is often chosen for its dramatic color change, but it is not a beginner Mbuna. Long-term success requires:

Space

Heavy stocking

Careful aggression management