How to Identify Mozambique Tilapia

To identify Mozambique Tilapia (Oreochromis mossambicus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Adults typically range from dull olive-green to yellowish-brown, often with irregular dark blotches or bars, especially when stressed or young. Breeding males develop a dark, almost black body with a bright red or orange margin on the dorsal and caudal fins, and often a blue-green sheen on the head. Females are generally duller.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Continuous dorsal fin with 15-17 spines and 10-13 soft rays., Caudal fin is truncate to slightly emarginate., Typically 3-5 dark spots or bars on the flanks, often fading with age., Lower jaw often protrudes slightly., Pharyngeal teeth are fine and numerous.

Dorsal fin

Long, continuous dorsal fin, typically with 15-17 hard spines followed by 10-13 soft rays. The spiny and soft-rayed portions are joined.

Tail fin

Caudal fin is truncate (straight) to slightly emarginate (forked).

Pectoral fin

Pectoral fins are relatively large and rounded.

Distinctive fins

Pelvic fins are thoracic, located directly below the pectoral fins. Anal fin has 3 spines and 9-12 soft rays.

Identification Tips

1. 1

   Dorsal Fin

   Look for a single, continuous dorsal fin with a spiny anterior portion and a soft-rayed posterior portion. The number of spines (15-17) and rays (10-13) is a key identifier.

2. 2

   Coloration (Breeding Males)

   Breeding males become very dark, almost black, with a striking red or orange band along the edge of the dorsal and caudal fins, and often a metallic blue-green sheen on the head.

3. 3

   Caudal Fin

   The tail fin is typically straight (truncate) or only slightly indented (emarginate), not deeply forked.

4. 4

   Lateral Line

   Possesses a characteristic interrupted lateral line, typical of cichlids.

5. 5

   Mouth

   The mouth is terminal, and the lower jaw often protrudes slightly beyond the upper jaw.

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