Apr 20 2012
Credit (photo & caption): Kevin Fitzsimmons (USA) – Elaborated description: Abdel Rahman El Gamal Even though securing the harvest of any crop is necessary, this matter is of top importance in fish farming whereas fish/shrimp pouching could pass unnoticed especially in earthen ponds. Fish farmers usually adopt security protocols which found practical and efficient. The …
Permanent link to this article: https://fishconsult.org/?p=3385
Apr 19 2012
Credit for photos and breif description: Bamu Ngong (Cameroon); detailed description: Abdel Rahman El Gamal Floating cages have become the most popular system for rearing tilapia in Brazil in areas with good water quality and suitable flushing rates whereas rapid water exchange and enough water depth are secured. In addition to large cages, small volume and high …
Permanent link to this article: https://fishconsult.org/?p=3373
Apr 14 2012
Credit: Glenda Velez Calabria (Colombia) and David Ramirez (Peru); Description: Abdel Rahman El Gamal This video shows how female African catfish (Clarias gariepinus) is identified based on the reddish coloration of the genital papilla. The video also shows the examination of the sexual maturation and spawning readiness of African catfish which is usually done through …
Permanent link to this article: https://fishconsult.org/?p=3354
Apr 14 2012
Credit: Glenda Velez Calabria (Colombia) and David Ramirez (Peru); Description: Abdel Rahman El Gamal This short video clearly shows the projection of the male genital papilla of African catfish (Clarias gariepinus). This video was taken during the month of November which is considered outside the natural spawning season of African catfish in Egypt.
Permanent link to this article: https://fishconsult.org/?p=3344
Apr 08 2012
Credit: Alejandro Perretta (Uruguay) The early stages takes place indoor under controlled conditions (incubators) as seen in one of the photos. The incubation and hatching is done for imported fertilized eggs of sturgeon hybrids within the genus Acipenser. As shown in the remaining photos, the Indoor-produced sturgeon fingerlings are moved to tanks of relatively small …
Permanent link to this article: https://fishconsult.org/?p=3321
Apr 08 2012
Credit: Alejandro Perretta (Uruguay) These photos belong to a sturgeon farm that is exclusively dedicated to meat production of sturgeon in Uruguay. The farm is located in Rio Nigro in Departamento de Tacuarembó province. Farm facility includes indoor and outdoor facilities. So far the complete reproduction cycle of sturgeon in Uruguay is at the research …
Permanent link to this article: https://fishconsult.org/?p=3310
Apr 07 2012
Credit for the video: Samuel Simon Zigizo (South Sudan) – Description: Abdel Rahman El Gamal This short video which shows the harvest of all-male of Nile tilapia (Oreochromis niloticus) indicates the high density of fish in the culture unit (cement tanks). Fish production in this specific farm ranges from 45-50 kg/m3. Handling of harvested fish …
Permanent link to this article: https://fishconsult.org/?p=3283
Apr 07 2012
Credit for the clip: Samuel Simon Zigizo (South Sudan) – Description: Abdel Rahman El Gamal This video shows the stripping of a female of African catfish, Clarias gariepinus. This practice takes place in artificial reproduction of the species and should be followed by artificial fertilization using testes taken from a sacrificed male. We are able to see …
Permanent link to this article: https://fishconsult.org/?p=3272
Mar 30 2012
Credit: Alejandro Perretta (Uruguay) Upon the end of raceway phase in raceways when fish are at 6 years of age, sturgeon females are slaughtered and caviar (eggs) is obtained. The photo shows female fish which are prepared before slaughtering. A female when slaughters measures about 1.5 meter in length and weighs about 8 kg. Caviar …
Permanent link to this article: https://fishconsult.org/?p=3252
Mar 26 2012
Credit: Alejandro Perretta (Uruguay) There has been some interest in tilapia aquaculture in Uruguay. In order to evaluate the potential of tilapia aquaculture under the overall conditions in Uruguay, a core from Genetically Improved Farmed Tilapia (GIFT) was introduced from Brazil few years ago. The plan is to create lines of tilapia that cope with the …
Permanent link to this article: https://fishconsult.org/?p=3223
