This video shows a predation case in the wild. The video shows the relationship between the predator and the prey. The freshness of the prey as shown in the video indicates the immediate action of predation. The video has been taken in Alexandria, Egypt
Tag: Egypt.
Permanent link to this article: https://fishconsult.org/?p=3440
Apr 30 2012
Incubating the embryos of African catfish, Clarias gariepinus (Video)
This video shows a hatchery of African catfish, Clarias gariepinus. Artificial reproduction of African catfish is now carried out at commercial level in several hatcheries in Egypt. The video shows the incubators of catfish embryos whereas water is supplied from the bottom and drains from screened windows near the top of the incubators.
Permanent link to this article: https://fishconsult.org/?p=3448
Apr 30 2012
Fouling of tilapia cages in Rayaan Depressions, Fayoum, Egypt (Video)
The video which has been taken in Rayaan Depression in Fayoum, Egypt. Cage farming has been banned in River Nile while some cages have been licensed for practicing in Rayaan depression for Nile tilapia farming. The video shows several piles of fouling aquatic plants. The periodic maintenance of cages is necessary in order to maintain …
Permanent link to this article: https://fishconsult.org/?p=3442
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 14 2012
Sex identification and spawning readiness of African catfish (Clarias gariepinus) female (Video)
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
Sex identification of African catfish (Clarias gariepinus) male (Video)
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 07 2012
Harvest of Nile tilapia (Oreochromis niloticus) from an intensive fish farm in Egypt (Video)
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
Mar 19 2012
Use of traditional water wheels in lifting water to fish farms in Egypt (Video)
Water wheels which were traditionally in use in agriculture are used in the present to lift water required to some fish farms in Egypt and some other countries. Based on water wheel users, it is claimed that water wheels are efficient in lifting water and also more durable with less incidences of breakdowns and operation …
Permanent link to this article: https://fishconsult.org/?p=2990
Mar 19 2012
Pond construction and establishing a harvest ditch (Egypt) – Video
Credit of the video: El-Sadig Arbab Hagar (Sudan); description: Abdel Rahman El Gamal Looking at the fish farm size in Egypt and so pond size, using the machinery in pond construction is the practical option. The intensification level of farming practices greatly influence the size of fish pond. A pond of a hectar or slightly …
Permanent link to this article: https://fishconsult.org/?p=3073