Abdel Rahman El Gamal
Author's posts
Apr 30 2012
Tilapia cages in Rayaan Depressions, Fayoum (Egypt) – Video
This video shows a unit of cages located in Rayaan Depression, Fayoum, Egypt. Demand feeders are commonly used in cages. As we see in the video, demand feeders are covered to avoid feed loss by birds.
Permanent link to this article: https://fishconsult.org/?p=3450
Apr 30 2012
Hand grading of harvested tilapia in a commercial tilapia farm in Egypt (Video)
The video has been taken in a commercial fish farm for Nile tilapia, Oreochromis niloticus. Farm crew is sorting fish in size grades although as shown in the video that the majority of harvested fish falls in the premium size. It worth mentioning that prices vary significantly according to size grades.
Permanent link to this article: https://fishconsult.org/?p=3446
Apr 30 2012
A small-scale fish feed mill in India (Video)
Credit: Indian fish farmers and Raju (India) Feed preparation at farm level using different locally available raw materials was a common practice in the olden days. Now a day, farmers prefer to go for using floating pellets in carp farming. Some big feed manufacturing companies supply the formulated feed which may not be have the …
Permanent link to this article: https://fishconsult.org/?p=3366
Apr 28 2012
Longevity in Fishes
This large bite does not only address the definition of longevity and related terms (e.g. lifespan) but also covers with examples the factors affecting longevity. For a valid illustration, a Table with maximum longevity has been included whereas clear differences among various fish groups could be easily noticed. The application of longevity in fishery and aquaculture practices has …
Permanent link to this article: https://fishconsult.org/?p=3431
Apr 26 2012
A state fish hatchery for common carp (Cyprinus carpio) and black catfish (Rhamdia quelen) in Uruguay
Credit: Alejandro Perretta (Uruguay) These photos show the only state fish hatchery for the production of common carp and black catfish in Uruguay. The hatchery is located in the north in a small village called “Villa Constitución” in “Departamento de Salto” (Salto province). The mandate of the hatchery is to supply seeds of common carp …
Permanent link to this article: https://fishconsult.org/?p=3424
Apr 24 2012
Establishment of a tilapia hatchery in Mpigi district in Uganda
This project proposal has been developed by a group of trainees who participated in Warm Water Fish Production training course in 2009 which was hosted by the Egyptian International Centre for Agriculture (EICA). This project is a part of the training program which is carried out under the supervision of Dr. Abdel Rahman El Gamal. The …
Permanent link to this article: https://fishconsult.org/?p=3413
Apr 22 2012
Water transparency measurements using Secchi disk
This information bite handles a practical pond management issue as well as a field tool which is Secchi disk. The use of Secchi disk in measuring water transparency has been covered in the attached information providing adequate background such as sources of turbidity in water as well as factors to considered during measurement. Relating the …
Permanent link to this article: https://fishconsult.org/?p=3404
Apr 20 2012
Mud crab (Scylla sp.) captured in shrimp-seaweed polyculture pond (Indonesia)
Credit: Kevin Fitzsimmons (USA) – Elaborated description: Abdel Rahman El Gamal SidrotunNaim with mud crab (Scylla sp.) captured in shrimp-seaweed (Gracilaria sp.) polyculture pond in Sigli, Aceh, Indonesia Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a …
Permanent link to this article: https://fishconsult.org/?p=3395
Apr 20 2012
Monkey guard at fish and shrimp farm in Indonesia
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
Cage farming of Chitralada strain of Nile tilapia (Oreochromis niloticus) in Brazil
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