OB Trewavasae
Labeotropheus trewavasae
OB Trewavasae is one of the classic Labeotropheus trewavasae mbuna. It combines naturally occuring variable blotched (OB) patterning with the active cave-dwelling behavior and grazing body shape that make this species a staple in structured Malawi mbuna aquariums.
Origin and Habitat
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Native Region: Lake Malawi OB form of Labeotropheus trewavasae.
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Natural Habitat: Cave-dwelling rocky habitat with grazing surfaces.
Physical Characteristics
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Size: 5-6 inches.
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Coloration: Variable OB blotching; males generally show stronger color and pattern with maturity.
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Body Shape: Sturdy Labeotropheus mbuna body with a specialized grazing profile and downturned mouth.
Behavior and Temperament
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Temperament: Mildly aggressive.
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Social Behavior: Best with compatible Lake Malawi mbuna in a rock-structured aquarium.
Aquarium Care
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Tank Size: A 55 gallon aquarium or larger is recommended.
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Water Parameters: 74-84°F, pH 7.4-8.4, hard water.
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Tank Setup: Provide sand, extensive rockwork, caves, grazing surfaces, broken sightlines, and strong filtration.
Diet and Feeding
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Primary Staple: Feed a quality daily diet such as Ron’s Mbuna Food.
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Juveniles: Growing fish can be fed Ron’s Juvenile Food.
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Fry: Newly released fry should be started on Ron’s Fry Food.
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Feeding Frequency: Feed 1–2 small meals daily and avoid overfeeding.
Breeding
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Breeding Type: Maternal mouthbrooder.
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Breeding Notes: Males defend rocky territories and display to females. Females mouthbrood eggs and fry, and fry benefit from dense rock cover.
Tank Mates
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Compatible With: Other Lake Malawi mbuna and sturdy African cichlids of similar size.
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Avoid: Tiny fish, delicate community fish, and highly aggressive mbuna in cramped aquariums.
