Neha Patil (Editor)

Oreochromis aureus

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Kingdom  Animalia
Order  Perciformes
Subfamily  Pseudocrenilabrinae
Scientific name  Oreochromis aureus
Length  13 – 20 cm (Adult)
Rank  Species
Phylum  Chordata
Family  Cichlidae
Tribe  Tilapiini
Mass  2.3 – 2.7 kg (Adult)
Higher classification  Oreochromis
Clutch size  Female: 160 – 1,600
Oreochromis aureus MitoFish Oreochromis aureus
Similar  Oreochromis, Cichlid, Mozambique tilapia, Sarotherodon, Oreochromis urolepis hornorum

Tilapiaspot swimmin with the fishes blue tilapia fingerlings and fry oreochromis aureus

The blue tilapia or Israeli tilapia, Oreochromis aureus, is a species of fish in the Cichlidae family. Native to Northern and Western Africa, and the Middle East, through introductions it is now also established elsewhere, including parts of the United States, where it has been declared an invasive species and has caused significant environmental damage. It is known as blue kurper in South Africa.


Oreochromis aureus Blue Tilapia

Flight of the blue tilapia oreochromis aureus


Oreochromis aureus httpsiytimgcomviyaiH70BYYUYmaxresdefaultjpg

The blue tilapia is a freshwater fish with a high tolerance for brackish water. Adults are usually 5 to 8 in (13 to 20 cm) in length and weigh 5 to 6 lb (2.3 to 2.7 kg); the largest recorded specimen was more than 21 inches (53 cm) long and weighed more than 10 pounds (4.5 kg). Blue tilapia are mouthbrooders, and broods range from 160 to 1600 eggs per female. O. aureus is primarily herbivorous, but will occasionally consume zooplankton; the young include small invertebrates in their diet.


Oreochromis aureus Oreochromis aureus Wikipedia

The blue tilapia is native to Northern and Western Africa, and the Middle East, from the Senegal, Niger, Benue and lower Nile Rivers in Africa to the Jordan River in the Middle East. Through introductions, the fish can be found in the United States in Texas, Alabama, Florida, and Nevada. It has also been established in Central and South America, and Southeast Asia. The original stocks of O. aureus in the United States were from Israel.


The Israeli Oreochromis aureus is known there also as "Jordan St. Peter's fish" and was traditionally coming down the Jordan River from Lake Huleh to the Sea of Galilee. It is black and larger than the white "Common St. Peter's fish" or simply "St. Peter's fish" (Tilapia zillii, musht in Arabic and adopted into Modern Hebrew, lit. "comb"). Another "St. Peter's fish" is the "Galilee St. Peter's fish" (Mango tilapia, Sarotherodon galileus; Arabic musht 'abyad), which is white and also larger than Tilapia zillii.

Invasive species

Oreochromis aureus has been introduced in many places around the world for use as a food fish, and frequently in order to control aquatic vegetation. Its presence may have in many cases been mis-documented as Oreochromis niloticus, because the two species were only recently distinguished.

In the United States

Since its introduction into Florida in 1961, the fish has increased its range and frequency of occurrence. It is now the most widespread foreign species in Florida, with established populations as far north as Lake Alice, in Gainesville. It is a major management problem for the National Park Service due to its predominance in Taylor Slough in Everglades National Park, where it has changed the fish community structure. The species is also expanding its range in Texas. It was at one time responsible for inhibition of the population of largemouth bass in Lake Trinidad (in Henderson county) until it was extirpated, and is implicated in the unionid mussel declines in two bodies of water in Texas. It is also blamed for a severe decline in native fish populations in Warm Springs Natural Area, Nevada.


Oreochromis aureus Wikipedia