Abdel Rahman El Gamal
Author's posts
Mar 18 2012
Cage aquaculture near the source of River Nile in Uganda
Credit: Egesa Eugene (Uganda) The photo shows a cage fish farm (Source Nile) whereas cages are fitted with damand feeders. The farm is located near the source of River Nile in Jinja. This photo was taken on July12 2009 Note:We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify …
Permanent link to this article: https://fishconsult.org/?p=3049
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 15 2012
Transportation of tilapia fingerlings in local aquaculture system in Rwanda
Credit: Fidele Kampayana (Rwanda) The photos show a local system for transporting the fingerlings of Nile tilapia, Oreochromis niloticus produced from natural spawning system carried out in earthen ponds -as seen in one of the photos- of about 500 m2. The transportation tank as shown in the photo is a plastic can of a volume that can range …
Permanent link to this article: https://fishconsult.org/?p=2983
Mar 14 2012
Establishment of a tilapia farm project in Dawenya, Ghana
This project proposal has been developed by a team of aquaculturists who participated in Warm Water Fish Production training course in 2011 under the supervision of Dr. Abdel Rahman El Gamal. The team propsed the establishment of a 63-ton tilapia farm in Dawenya, Ghana. The rationality behind choosing Ghana for this project as well as the choice of all-male …
Permanent link to this article: https://fishconsult.org/?p=2966
Mar 13 2012
Fish breeding tanks (ponds) in Indonesia
Credit: Anna Jamil (Indonesia) The photo shows a group of small ponds (tanks) of 2×2 meters each. Farmers who own such type of ponds use them for breeding purposes. Usually, these facilities produce and distribute their production of fish seed to fish growers in the same or nearby villages. Bamboo that surrounds tanks provides the …
Permanent link to this article: https://fishconsult.org/?p=2957
Mar 13 2012
Traditional facility for seed production of catfish species (Clarias sp.) in Indonesia
Credit: Anna Jamil (Indonesia) This photo shows a hatchery facility for African catfish (Clarias gariepinus) and others Clarias species. Usually is such facility, natural spawning is practiced. In general, the growing aquaculture activities of African catfish (hatching and farming) reflect the high consumption demand on these species in Indonesia. Many restaurants offer catfish in their …
Permanent link to this article: https://fishconsult.org/?p=2949
Mar 13 2012
Marine cage aquaculture in Indonesia
Credit: Anna Jamil (Indonesia) The photo shows marine cages located in the east of java (Java Islands) and represent marine cages located in other places especially surrounding islands in east part of Indonesia. Marine fish which are commonly cultured in these cages include grouper of the species Plectrocopormus leopardus, Epinephelus suillus, Epinephelus tauvina, cheilinus undulates, …
Permanent link to this article: https://fishconsult.org/?p=2943
Mar 13 2012
Artificial coral reef culture (Indonesia)
Credit: Anna Jamil (Indonesia) The photo shows the plantation of artificial coral reef. Even though the purpose of coral transplantation may vary, ecological issues remain the main focus. Artificial reefs contribute to the restoration of marine ecosystem, reduce the impact of marine erosion, and serve as refugees for growing of ornamental fish. Stakeholders related to …
Permanent link to this article: https://fishconsult.org/?p=2935