OB Compressiceps Care Guide

Dimidiochromis compressiceps

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Bioload Score

8000

Semi-AggressiveModerate
Max Size
25 cm / 9.8"
Temperature
24–28°C (75–82°F)
pH Range
7.5 – 8.6
Min Tank Size
300L (79 gal)
Min Group Size
Can be kept alone
Tank Level
Bottom-Mid
Origin
Africa
Temperament
Semi-Aggressive
Difficulty
Moderate
Breeding Difficulty
Moderate

Diet

A carnivorous predator that primarily eats small fish and aquatic invertebrates.

Community Compatibility

Suitable tankmates include robust Lake Malawi haps and larger peaceful mbuna of comparable size, provided they have compatible temperaments.

Good to Know

Dimidiochromis compressiceps is commonly called the Malawi eye-biter because its unusually narrow, laterally compressed head is adapted for seizing prey from the side.

Gender Differences

Males are generally larger and develop stronger blue coloration, while females are usually smaller and more silver or orange-blotched, although OB colour patterns can make visual sexing less reliable.

About the OB Compressiceps

The OB Compressiceps is a striking colour form of Dimidiochromis compressiceps, a long-bodied Lake Malawi cichlid with an exceptionally narrow, laterally compressed head. Its orange-blotched pattern varies considerably between individuals, often combining irregular orange, cream, yellow and dark markings with the species’ characteristic streamlined profile.This fish is a specialised predator with a remarkably sideways-oriented hunting technique. Rather than simply rushing directly at prey, it can approach small fish from the side and use its slender head and large mouth to make a sudden grab, giving rise to the memorable common name Malawi eye-biter.In nature, Dimidiochromis compressiceps is found in Lake Malawi, where it occurs among vegetation, rocky margins and open habitats. Its shape helps it move through dense Vallisneria beds and other cover while remaining an efficient ambush hunter.The species belongs to the haplochromine cichlid group and is endemic to the Lake Malawi drainage. Although wild fish are typically associated with blue, silver and yellow tones, the OB form is a selectively maintained blotched colour variety prized for its unusual and highly individual patterning.Adults are imposing, alert fish with strong predatory instincts and an engaging presence. They are generally less relentlessly aggressive than many mbuna, but their size, hunting behaviour and territorial displays give them a distinctive role among Malawi cichlids.

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