How to Identify OB Zebra Cichlid

To identify OB Zebra Cichlid (Metriaclima estherae), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Highly variable. Males can be solid red, orange, or blue, often with faint vertical bars. Females are typically 'OB' (Orange Blotch), displaying irregular patches of black, orange, and red over a lighter base. Some females can also be solid orange or red. The 'OB' pattern is a genetic trait that can also appear in males, though less commonly. The base color can range from light blue to dark blue, or various shades of red/orange.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Robust, somewhat elongated body typical of Mbuna cichlids., Prominent lips adapted for scraping algae from rocks., Sexual dimorphism in coloration (males often solid, females often OB)., Egg spots on the anal fin of males, used during breeding.

Dorsal fin

Long, continuous dorsal fin with spiny anterior rays and softer posterior rays.

Tail fin

Rounded to slightly emarginate caudal fin.

Pectoral fin

Paired pectoral fins, typically clear or slightly colored.

Distinctive fins

Anal fin of males typically features prominent ocelli (egg spots) which play a crucial role in mouthbrooding behavior.

Identification Tips

1. 1

   Coloration

   Look for the characteristic 'OB' (Orange Blotch) pattern, especially in females, which is a mosaic of black, orange, and red. Males are often solid red, orange, or blue, but can also display the OB pattern.

2. 2

   Body Shape

   Robust, somewhat compressed body with a relatively steep forehead, typical of Mbuna cichlids.

3. 3

   Mouth

   Terminal mouth with thick lips, adapted for scraping algae from rocky surfaces.

4. 4

   Egg Spots

   Males typically have distinct, yellowish egg spots on their anal fin, which are used to entice females during spawning.

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