Mar 18 2012
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 us if you wish to use a picture or more. This is expected and will be appreciated.
Permanent link to this article: https://fishconsult.org/?p=3049
Mar 17 2012
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 as 6-7 days. Taking embryos from female’s mouth and continue the incubation in hatchery incubators will shorten the spawning interval of females and so enhancing the capacity of the hatchery. This short video shows the way of collecting the embryos by opening the female’s mouth and shaking the mouth into a volume of water. This particular video shows an advanced stage of embryo development (hatching). Training is important for identifying –from distance- the female incubating embryos and for gentle handling of target female in order to avoid the spitting and possible loss of embryos.
Permanent link to this article: https://fishconsult.org/?p=3036
Mar 17 2012
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 are macerated (cut) and sperm is directly released and mixed with the stripped eggs from a catfish female.
Permanent link to this article: https://fishconsult.org/?p=3023
Mar 15 2012
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 pituitary gland from male fish makes more sense because male is sacrificed to obtain the testes required for egg fertilization. This represents a multi-benefit approach when sacrificing a single specimen. The video shows the tools used in the careful breaking the bones and locating the pituitary in its cavity. Extraction of pituitary requires enough practice to avoid smashing the pituitary or difficulty in identifying it from other tissues.
Permanent link to this article: https://fishconsult.org/?p=2998
Mar 15 2012
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 from 10 – 40 liters. The aeration of the tank is done using a bicycle pump. The survival of transported fingerlings in this method is very high and can reach up to 100%”
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 picture or more. This is expected and will be appreciated.
Permanent link to this article: https://fishconsult.org/?p=2983
Mar 14 2012
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 Nile tilapia (Oreochromis niloticus) have been adequately addressed in the project document. The objectives of the project were clearly stated. The description of project components has been covered in text and in diagrams. Similarly, technical, financial and economic aspects have been addressed. The project document is supported by diagrams and charts. This training course is annually hosted by the Egyptian International Centre for Agriculture (EICA).
[important]Establishment of a FISH FARM PROJECT in Ghana[/important]
Permanent link to this article: https://fishconsult.org/?p=2966
Mar 13 2012
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 support of the structure to which plastic sheets are attached. These ponds are filled by mesin pumps while pond draining is done using plastic pipe. Farmers in Indonesian villages are familiar with this type of ponds.
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 picture or more. This is expected and will be appreciated.
Permanent link to this article: https://fishconsult.org/?p=2957
Mar 13 2012
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 menu in various dishes especially the fried catfish served with fresh vegetables and traditional chili. This particular facility is a land-based facility constructed via land excavation and covered by plastic sheets.
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 picture or more. This is expected and will be appreciated.
Permanent link to this article: https://fishconsult.org/?p=2949
Mar 13 2012
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, polcador grouper, and seabass (Lates calcarifer), red Snapper (Lutjanus malabaricus, Lutjanus johni), and Siganus sp. Average size of a typical square cage is about 7 x 7 x 2m depth depending the location.
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 picture or more. This is expected and will be appreciated.
Permanent link to this article: https://fishconsult.org/?p=2943
Mar 13 2012
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 the transplantation of coral reef include marine conservation agencies, NGOs, research institutes and private sector. For example, the center of coral transplantation in Bali and some islands around has some activities in this area in partnership with stakeholders. Toursim is an important beneficiary as artificial coral reef will be important for variety of fish species which divers are interested to watch.
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 picture or more. This is expected and will be appreciated.
Permanent link to this article: https://fishconsult.org/?p=2935
