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 …
Category: Videos
Permanent link to this article: https://fishconsult.org/?p=3283
Apr 07 2012
Artificial reproduction of African catfish (Clarias gariepinus) – Egg stripping (Video)
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 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 (Earth Work) – India (Video)
Credit: Indian fish farmers and G. Venkata Raju (India) Pond construction by manual labour has been stopped. Earth work is undertaken by bulldozers and tractors. Bulldozers are used in the case of large scale excavations whereas tractors are used for the projects requiring the earth work not more than 200 ha generally. However, finishing work will …
Permanent link to this article: https://fishconsult.org/?p=3061
Mar 19 2012
Feeding behavior of Nile tilapia (Oreochromis niloticus) during grow-out (Video)
This video shows the feeding behavior of Nile tilapia (Oreochromis niloticus) whereas the feeding aggressiveness is obvious and will be always the case if fish are in good health and when the aquatic environment is close to optimum. This Tilapia has a small stomach and so would require a relatively long time to get its …
Permanent link to this article: https://fishconsult.org/?p=3066
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
Mar 17 2012
Collecting embryos from the mouth of a red tilapia female (Video)
Credit for the video: Fish Culture Development course (2010) – Spanish speaker group, description: Abdel Rahman El Gamal In mouth fish brooders such as the key farmed tilapia, a female incubates fertilized eggs till hatching. The incubation period is directly related to water temperature and can range from as short as 3 days to as long …
Permanent link to this article: https://fishconsult.org/?p=3036
Mar 17 2012
Artificial fertilization of the eggs of African catfish, Clarias gariepinus (Video)
Credit for the video: Emmanuel Ohene Marfo (Ghana) Description: Abdel Rahman El Gamal Such as the case with silurid fishes, it is almost impossible to hand strip the sperm from the male of African catfish, Clarias gariepinus. Therefore and as seen in this video, testes of a sacrificed male are used for the artificial fertilization of catfish eggs. Testes …
Permanent link to this article: https://fishconsult.org/?p=3023
Mar 15 2012
Locating and extracting the pituitary gland of African catfish, Clarias gariepinus (Video)
The pituitary gland extract is used in inducing the reproduction of African catfish (Clarias gariepinus). In order for the pituitary extract to be effective, donor fish should be sexually mature whether male or female. Also, the extraction of pituitary gland is preferred to be close to or within the spawning season. From practical views, extracting the …
Permanent link to this article: https://fishconsult.org/?p=2998
Mar 11 2012
Checking the spawning of Nile tilapia (Oreochromis niloticus) in hapa system in Egypt (Video)
This video shows how the 2-person crew check the spawning of Nile tilapia (Oreochromis niloticus) in open hatchery system using hapas in earthen ponds. The crew are working at both sides of the spawning hapa. The gradually crowd tilapia broodstock to facilitate their handling. The intervals between checking depend on water temperature and target product whether fry …
Permanent link to this article: https://fishconsult.org/?p=2906