Credit for the video: Victor Hugo (Peru) Information source: Ismael Radwan (Egypt) Description: Abdel Rahman El Gamal The video shows water cycle in a closed system of tilapia aquaculture. The video shows the upward pumping of the water discharged from the production tanks into an overhead reservoir which …
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Permanent link to this article: https://fishconsult.org/?p=3659
Sep 08 2012
Fry collection of Nile tilapia (Oreochromis niloticus) in concrete tanks – Aswan (Egypt)- Video
The video shows how tilapia fry is collected from concrete tanks which belong to a tilapia hatchery in Aswan. The method shown in the video targets to minimize the handling stress during this operation especially tilapia fry are delicate in relation to such operation. Fry collection starts with tank drainage till water level is significantly …
Permanent link to this article: https://fishconsult.org/?p=5545
Sep 07 2012
The culture of whiteleg shrimp, Litopenaeus vannamei in normal and low salinity systems in Thailand
Credit: Wanna Thawinwan (Thailand) The culture of whiteleg shrimp, Litopenaeus vannamei, in Thailand follows two main farming systems in regard to water salinity. In the first system, the shrimp are farmed in normal salinity. In the low salinity system, a small area of the pond is separated from the rest of the pond using plastic …
Permanent link to this article: https://fishconsult.org/?p=5531
Sep 06 2012
Predation efficiency of Nile perch, Lates niloticus
This 2-slide information bite addresses the predation efficiency of Nile perch in relation to its characteristics especially its mouth and gapes. The bite touched the case study of the introduction of Nile perch into Lake Victoria and the impacts of the introduction. The predator-prey relationship has been addressed in this bite which is supported by …
Permanent link to this article: https://fishconsult.org/?p=5506
Sep 04 2012
Feeding of whiteleg shrimp, Liptopenaeus vannamei in Thailand
Credit: Wanna Thawinwan (Thailand) The three photos address the shrimp feeding in a typical fish farm in Thailand whereas technical and economic issues are considered. Commercially formulated pelleted feed is used throughout the growing season. The pellet size and so its protein contents vary according to shrimp size as shown in the following Table. Average …
Permanent link to this article: https://fishconsult.org/?p=5499
Sep 03 2012
Farming of whiteleg shrimp, Liptopenaeus vannamei in Thailand
Credit:Wanna Thawinwan (Thailand) This photo shows a typical pond for whiteleg shrimp, Liptopenaeus vannamei in Thailand. The pond has a surface area about 16,000 m2 with a water depth of about 1-1.2 m. Shrimp farmer buys the farm requirement of shrimp post larvae (Pl 12) from a shrimp hatchery whereas shrimp are grown for 80-90 days. The paddle …
Permanent link to this article: https://fishconsult.org/?p=5485
Sep 02 2012
Export of fresh and frozen octopus from Egypt
The export of octopus represents a significant portion of total fish export from Egypt. The octopus is harvested from the Mediterranean Sea whereas the export is carried by licensed establishments. A portion of the export is done at fresh form while most of exported octopus is at frozen form. The European markets are the key …
Permanent link to this article: https://fishconsult.org/?p=5476
Aug 28 2012
Rotifer enrichment in marine hatcheries
Rotifers by itself do not possess high nutritional value. However, because of their appropriate sizes to the small larvae such as those of marine fish, rotifers have been successfully used in marine hatcheries after been adequately enriched to meet the nutritional demands of target larvae for proper neural development. Brachionus plicatilis is a common rotifer in …
Permanent link to this article: https://fishconsult.org/?p=5464
Aug 24 2012
Fish display in retail shops in Riyadh (Saudi Arabia)
These photos were taken in Riyadh fish market in March 2012. One of the photos shows a typical retail shop whereas fish displayed are almost marine and marketed as fresh fish. However, tilapia is sold in some shops as demanded more by foreign residents whether from Arab or South East countries. The main marine species …
Permanent link to this article: https://fishconsult.org/?p=5431
Aug 23 2012
Traditional Stilt fishing in Sri Lanka
Image credit: D. S. K. Pitigala and Ananda sugathapala (SriLanka) Text: Abdel Rahman El Gamal Background: the “stilt fishing” or ritipanna is a tradition fishing technique which is practiced especially around the towns of Kathaluwa and Ahangama, Sri Lanka. Historically, stilt fishing in Sri Lanka started after the Second World War when …
Permanent link to this article: https://fishconsult.org/?p=5407