How to Identify Galilee Tilapia

To identify Galilee Tilapia (Sarotherodon galilaeus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Generally silvery-grey to yellowish-green, often with 3-4 indistinct vertical bars on the flanks. Breeding males can develop a reddish or yellowish flush, particularly on the operculum and fins. A prominent dark spot (tilapia spot) is often present at the base of the soft dorsal fin rays. The caudal fin is typically emarginate to slightly forked, often with fine dark spots or bars.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Deep, compressed body, Relatively small mouth compared to other tilapias, Often exhibits 3-4 faint vertical bars on the flanks, Dark spot at the base of the soft dorsal fin (tilapia spot), Caudal fin with fine dark spots or bars

Dorsal fin

Long dorsal fin with 15-17 spines and 11-13 soft rays. The spiny and soft-rayed portions are continuous.

Tail fin

Emarginate to slightly forked caudal fin, often with fine dark spots or bars.

Pectoral fin

Well-developed, rounded pectoral fins.

Distinctive fins

Anal fin with 3 spines and 9-11 soft rays. Pelvic fins are thoracic.

Identification Tips

1. 1

   Body Shape and Size

   Look for a deep, compressed body. Adults typically reach 30-40 cm (12-16 inches) in total length and can weigh up to 1.5-2 kg (3.3-4.4 lbs), though larger specimens have been recorded.

2. 2

   Coloration and Markings

   Observe the silvery-grey to yellowish-green body. Note the presence of 3-4 faint vertical bars on the flanks and the characteristic dark 'tilapia spot' at the base of the soft dorsal fin. The caudal fin often has fine dark spots or bars.

3. 3

   Mouth and Jaw Structure

   The mouth is relatively small and terminal. The jaws typically have bicuspid teeth in the outer row and tricuspid teeth in the inner rows.

4. 4

   Fin Structure

   Examine the continuous dorsal fin with its distinct spiny and soft-rayed portions. The caudal fin is emarginate to slightly forked.

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