Got a photo? Identify fish instantly with the Fishby app.
Open the appDescription
Coptodon zillii, commonly known as the Redbelly Tilapia, is a species of cichlid fish native to freshwater and brackish environments in Africa and the Middle East. It is characterized by its deep body, often with a reddish tint on the belly, especially in breeding males. This species is highly adaptable and has been widely introduced globally, often becoming an invasive species due to its rapid reproduction, broad diet, and tolerance to various environmental conditions. It plays a significant ecological role in its native range and is a commercially important food fish in many regions.
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
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.
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.
Fin Spines
Count the dorsal fin spines (14-17) and anal fin spines (3). This helps differentiate from some other cichlid species.
Lateral Line
Like most cichlids, it has a discontinuous lateral line, with an upper and lower section.
Habitat
- Water type
- freshwater
- Depth
- Typically found in shallow waters, from surface to a few meters deep.
- Environment
- Inhabits a wide range of aquatic environments including lakes, rivers, canals, irrigation ditches, ponds, and estuaries. Prefers areas with dense aquatic vegetation, submerged structures, or muddy/sandy bottoms. Tolerant of a wide range of salinities, temperatures, and oxygen levels.
- Geographic range
- Native to North and West Africa (e.g., Nile River basin, Lake Chad basin, coastal rivers of West Africa) and the Middle East (e.g., Jordan River system). Widely introduced globally, including North America, Central and South America, Asia, and Europe, often becoming invasive.
Aquarium Information
- Care level: intermediate
- Temperament: semi-aggressive
- Diet: omnivore
- Minimum tank size: 75 gallons (for a single adult or pair)
- Temperature: 22-30°C (72-86°F)
- pH level: 7.0-8.5
- Hardness: 10-25 dGH
- Compatibility: Can be kept with other robust, similarly sized cichlids or large, peaceful fish. Avoid small, timid species. Territorial during breeding.
- Special requirements: Requires a spacious tank with plenty of hiding spots (rocks, caves, driftwood) and a sandy or fine gravel substrate. Good filtration is essential due to their messy eating habits. Can be destructive to live plants.
Wild Information
- Conservation status: least concern
- Seasonality: Breeds year-round in tropical climates, with peak activity often linked to rainy seasons or warmer temperatures. Fishing occurs throughout the year.
- Market price: Varies significantly by region and market; generally a low to moderately priced food fish.
- Commercial importance: high
- Taste: Mild, slightly sweet, often described as earthy.
- Texture: Flaky, firm white flesh.
- Cooking methods: Frying, Baking, Grilling, Steaming, Broiling
- Nutritional value: Good source of lean protein, omega-3 fatty acids, and essential vitamins and minerals.
Key Facts
Invasive Successinteresting
Coptodon zillii is one of the most widely introduced and successful invasive fish species globally, often outcompeting native fish for resources and altering aquatic ecosystems.
Parental Carebehavior
Unlike many other tilapias which are mouthbrooders, Coptodon zillii is a substrate spawner and biparental guarder, with both parents actively defending their eggs and fry.
Dietary Flexibilitybehavior
Its omnivorous diet, including a significant proportion of plant matter, algae, and detritus, contributes to its adaptability and success in diverse habitats.
Temperature Toleranceinteresting
Redbelly Tilapia can tolerate a wide range of temperatures, from as low as 8°C for short periods to over 37°C, although optimal growth occurs between 25-30°C.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: edible
- Handling notes: No specific handling precautions beyond standard fish handling. They have sharp dorsal and anal fin spines that can cause minor punctures if not handled carefully. They can be quite slippery and active when caught.
Similar Species
Mozambique Tilapia
Oreochromis mossambicus
Lacks the prominent reddish belly coloration of C. zillii. Males develop a dark, often black, coloration with white lips during breeding. The dorsal fin spot is usually less distinct or absent in O. mossambicus.
Nile Tilapia
Oreochromis niloticus
Generally has more pronounced vertical bars (often 9-10) that extend further down the body. Lacks the strong reddish belly coloration. Breeding males of O. niloticus typically have a greyish-blue head and body, sometimes with a reddish margin on the caudal fin, but not the overall red belly.
Blue Tilapia
Oreochromis aureus
Often has a bluish-grey body coloration, especially in males. Lacks the reddish belly. Breeding males develop a metallic blue head and body, and often have a reddish margin on the dorsal and caudal fins, but not the extensive red belly of C. zillii.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Cichliformes
- Family
- Cichlidae
- Genus
- Coptodon
- Species
- Coptodon zillii
Explore Redbelly Tilapia
Identify fish anywhere
Free on iOS, Android, and Web. Photo identification, full species details, and more.