How to Identify Redbelly Tilapia

To identify Redbelly Tilapia (Coptodon zillii), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Body color varies from olive-green to brownish-grey, often with 7-9 dark vertical bars on the flanks. The most distinctive feature is the reddish to orange coloration on the belly and lower fins, particularly pronounced in breeding males. Fins may have a yellowish or reddish tint. A dark spot (tilapia spot) is typically present on the soft-rayed portion of the dorsal fin.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Deep, laterally compressed body., Reddish or orange coloration on the belly and lower fins, especially in breeding males., 7-9 dark vertical bars on the flanks (may be faint or absent depending on mood/habitat)., A prominent dark spot on the soft-rayed part of the dorsal fin., Large scales., Terminal mouth.

Dorsal fin

Long, continuous dorsal fin with 14-17 spines and 10-13 soft rays. The spiny portion is longer than the soft-rayed portion.

Tail fin

Caudal fin is truncate to slightly emarginate.

Pectoral fin

Pectoral fins are relatively long and pointed.

Distinctive fins

Pelvic fins are thoracic, often with a reddish hue. Anal fin has 3 spines and 8-10 soft rays.

Identification Tips

1. 1

   Body Shape and Coloration

   Look for a deep, compressed body with an olive-green to brownish-grey base color. The reddish or orange belly and lower fins are key, especially in males. Vertical bars may be present.

2. 2

   Dorsal Fin Spot

   A distinct dark spot (often ocellated with a lighter margin) on the posterior, soft-rayed portion of the dorsal fin is a reliable identifier.

3. 3

   Fin Spines

   Count the dorsal fin spines (14-17) and anal fin spines (3). This helps differentiate from some other cichlid species.

4. 4

   Lateral Line

   Like most cichlids, it has a discontinuous lateral line, with an upper and lower section.

Explore Redbelly Tilapia