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AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
| Species | Oreochromis niloticus [WoRMS] | |
| Authority | (Linnaeus, 1758) | |
| Family | Cichlidae | |
| Order | Cichliformes | |
| Class | Teleostei | |
| Phylum | Chordata | |
| Synonym (?) | ||
| Sub-species level (?) | niloticus |
| Native origin (?) | Not entered Comments: African rivers (Nile, Niger) |
| Life form / Life stage (?) |
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| Sociability / Life stage (?) |
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| Reproductive frequency (?) | Iteroparous |
| Reproductive type (?) | Sexual References: Peña-Mendoza, B., Gómez-Márquez, J. L., Salgado-Ugarte, I. H., Ramírez-Noguera, D. 2005. Reproductive biology of Oreochromis niloticus (Perciformes: Cichlidae) at Emiliano Zapata dam, Morelos, Mexico. Revista de biologia tropical, 53(3-4), pp. 515-522. Comments: Sexual maturity is reached at 3-6 months depending on temperature, reaching about 30 g. Reproduction occurs only when temperatures are over 20°C. Several yearly spawnings every 30 days. A single male probably fertilises the eggs of more than one female. Eggs are shed in batches in shallow nest and fertilized by male. |
| Developmental trait (?) | Brooding Parental care References: Tacon, P., Ndiaye, P., Cauty, C., Le Menn, F., Jalabert, B. 1996. Relationships between the expression of maternal behaviour and ovarian development in the mouthbrooding cichlid fish Oreochromis niloticus. Aquaculture, 146(3-4), pp. 261-275. Comments: Females incubate eggs inside their mouths (approximately for a week) where larvae hatch and remain until the vitellus is reabsorved. Eggs are shed in batches in shallow nest and fertilized by male. Each batch of eggs is picked up into oral cavity by female. Females solely involved in broodcare. Female carries up to 200 eggs in her mouth where the larvae hatch and remain until after the yolk-sac is absorbed. |
| Characteristic feeding method / Life stage (?) |
References (not structured): Tesfahun, A., Alebachew, S. 2023. Food and feeding habits of the Nile tilapia Oreochromis niloticus (Linnaeus, 1758) from Ribb reservoir, Lake Tana sub-basin, Ethiopia. Cogent Food & Agriculture, 9(1), 2212457. Temesgen, M., Getahun, A., Lemma, B., Janssens, G. P. 2022. Food and feeding biology of Nile tilapia (Oreochromis niloticus) in Lake Langeno, Ethiopia. Sustainability, 14(2), 974. Comments: The Nile tilapia is mostly a herbivore, but with omnivorous tendencies, especially when young They mostly feed on phytoplankton and algae, and in some populations other macrophytes also are important. Other recorded food items are detritus and aquatic insect larvae including those of mosquitoes. |
| Mobility / Life stage (?) |
Comments: Nile tilapia larvae are free-swimming and possess the ability to move actively in the water column. |
| Salinity tolerance range (?) | Exact range: 0 - 22 References: Rairat, T., Liu, Y. K., Hsu, J. C. N., Hsieh, C. Y., Chuchird, N., Chou, C. C. 2022. Combined effects of temperature and salinity on the pharmacokinetics of florfenicol in Nile tilapia (Oreochromis niloticus) reared in brackish water. Frontiers in Veterinary Science, 9, 826586. El-Leithy, A. A., Hemeda, S. A., El Naby, W. S. A., El Nahas, A. F., Hassan, S. A., Awad, S. T., ... Helmy, Z. A. 2019. Optimum salinity for Nile tilapia (Oreochromis niloticus) growth and mRNA transcripts of ion-regulation, inflammatory, stress-and immune-related genes. Fish physiology and biochemistry, 45, pp. 1217-1232. Comments: Nile tilapia can tolerate a wide range of water temperature (16–37°C) and salinity (0–22 ppt) with 98–100% survival rates. Salinity (16-ppt) is suitable for earing O. niloticus as the fish are more adaptive to salinity condition without changes in their growth rate. |
| Habitat modifying ability potential (?) | Unknown Comments: Not available. |
| Toxicity / Life stage (?) | Not relevant |
| Bioaccumulation association (?) | Anthropogenic chemical compounds References: Kaoud, H. A., El-Dahshan, A. R. 2010. Bioaccumulation and histopathological alterations of the heavy metals in Oreochromis niloticus fish. Nature and science, 8(4), pp. 147-156. Al-Kahtani, M. A. 2009. Accumulation of heavy metals in tilapia fish (Oreochromis niloticus) from Al-Khadoud Spring, Al-Hassa, Saudi Arabia. |
| Known human health impact? | Known References: Channa, M. J., Ayub, H., Ujan, J. A., Habib, S. S., Ullah, M., Attaullah, S., ... Khan, K. 2024. Human health risk assessment due to the incidence of heavy metals in different commercial feeds used for the culturing of biofloc fish (Nile tilapia: oreochromis niloticus). Biological Trace Element Research, 202(4), pp.1741-1751. Comments: Fish meat is a major and rich source of white protein; its quality is determined by the fish feed. However, the low-quality feed may contribute to a source of contamination. |
| Known economic impact? | Known References: Kaliba, A. R., Osewe, K. O., Senkondo, E. M., Mnembuka, B. V., Quagrainie, K. K. 2006. Economic analysis of Nile tilapia (Oreochromis niloticus) production in Tanzania. Journal of the world aquaculture society, 37(4), pp. 464-473. Comments: In Tanzania, Nile tilapia culture is a promising aquaculture enterprise. |
| Known measurable environmental impact? | Known References: Vicente, I. S., Fonseca-Alves, C. E. 2013. Impact of introduced Nile tilapia (Oreochromis niloticus) on non-native aquatic ecosystems. Pakistan Journal of Biological Sciences: PJBS, 16(3), pp. 121-126. Huchette, S. M., Beveridge, M. C., Baird, D. J., Ireland, M. 2000. The impacts of grazing by tilapias (Oreochromis niloticus L.) on periphyton communities growing on artificial substrate in cages. Aquaculture, 186(1-2), pp. 45-60. Comments: Nile tilapia generally can outcompete native species for food and habitats, which reduces the native fish populations due to competitive displacement. Fish grazing significantly reduced diatom diversity, mean diatom biovolume, the variability in standing periphyton biomass and the proportion of ash. Grazed periphyton communities were younger, healthier and more productive. |
| Included in the Target Species list? | No References: HELCOM, 2009. Alien Species and Ballast Water [PDF]. Available at: (https://archive.iwlearn.net/helcom.fi/stc/files/shipping/Table_2_Alienspecies_%20lists_2009.pdf) |
| Association with vessel vectors (?) | Unknown Comments: Not available. |
| Last update by | Sandra Gečaitė, 2024-08-12 |