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|EMW id||EMW ref. id||FAO species category||Species||Scientific name||Lower EMW (g)||Upper EMW (g)||Reference indicates lower or upper EMW figure?||EMW Method||Length-weight calculations||Country||Link to reference (external site)||Reference document||Reference url||Link to FishBase.org Species Summary (external site)|
|EMW-231||1||Blue-Nile tilapia,hybrid||Blue-Nile tilapia,hybrid||Oreochromis aureus x O. niloticus||220.00||220.00||Both||Average weight or weight range||NONE||Tilapia |
"Blue tilapia (Oreochromis aureus), Nile tilapia (Oreochromis niloticus) and their hybrids are common in mixed-sex cultures since they will attain a marketable size before commencing spawning. Species such as Mozambique Tilapia (Oreochromis mossambicus) and Wami tilapia (Oreochromis urolepis hornorum) are normally avoided since they will be too small when they reach sexual maturity.
"By choosing the right species or strains and providing the fish with a suitable environment and proper nutrition, it is possible to achieve a growth rate fast enough to allow fry produced in the spring to reach a marketable size by autumn in temperate regions. ?With a stocking density of 4,000 fry per acre, the average weight at harvest can then be expected to be around 0.5 pounds (220 grams), if supplemental feedings with protein rich food has been carried out."
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