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Regulating Nile perch fishery in Tanzania

Photo credit: Bilali Bandali (Tanzania) Review: Bilali Bandali and Abdel Rahman El Gamal (Founder of the website)

According to FAO statistics the catch of Nile perch (Lates niloticus) from Tanzanian waters amounted 73025, 68403 and 70626 tons in 2015, 2016 and 2017 respectively. Lake Victoria and Lake Tanganyika are the fishery resources of Nile perch in Tanzania. The Nile Perch contributes a significant amount of foreign exchange earnings in Tanzania.

The Nile perch specimen shown in the inserted picture was caught from Lake Victoria. This particular weighed 29 kg and measured 97 cm. The Fisheries Act No. 22 of 2003 and the Fisheries Regulations 2009, target the control the threat to the fishery recruitment and sustainability  of Nile perch population that result from its illegal fishery as well as the unregulated regional market. According to the act, the fish size at capture is applicable only to Nile perch which has an allowed slot size of 50 – 85 cm TL.

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Permanent link to this article: http://fishconsult.org/?p=15223

Promoting the role of women in fish culture in Senegal

Photo credit: Jean-Marie Sambou (Senegal) Description: Jean-Marie Sambou and Abdel Rahman El Gamal (Founder of the website)

The inserted picture shows fish cages of 10-m3 volume each. These net cages are a part of a promotion project targeting women in particular. The project is sponsored by CORPSAFRICA; an NGO caring mainly on woman having a mandate of supporting the role of women in fish culture as well as contribute to food security.   Beneficiary women are trained to grow fish in such cages for income and food security. National volunteers are the backbone of this program.

Permanent link to this article: http://fishconsult.org/?p=15240

Cage culture of tilapia in Madagascar

Photo credit:Marcel Jean Adavelo (Madagascar)  Review:Marcel Jean Adavelo and Abdel Rahman El Gamal (Founder of the website)

The inserted picture shows the culture of tilapia in cages in Boeny Region, situated in the Northwestern side of Madagascar. The target of this experimental unit is to collect the necessary information needed before promoting cage culture among potential fish farmers. The experimental cages have been placed in Lake Amboromalandy. Nile tilapia (Oreochromis niloticus) used in this pilot project has been introduced from Japan.

In addition to the high consumer preference towards tilapia, its cage culture is believed to be a potential activity to generate additional income to small producers in rural families. The tilapia cage piloting is affiliated to a PATIMA project titled “Rural Development Project through Diffusion of Aquaculture of Tilapia in the Province of Mahajanga (Region of Boeny)”. This development project has been implemented by the Ministry of Fisheries Resources and Fisheries in Madagascar in cooperation with Japan International Cooperation Agency (JICA).

Permanent link to this article: http://fishconsult.org/?p=15237

Educational facility for the culture of African catfish in Burkina Faso

Photo credit: Philippe Sawadogo (Burkina Faso) Review: Philippe Sawadogo and Abdel Rahman El Gamal (Founder of the website)

The photos show an education facility located in Loumbila, 25 Km from Ouagadougou (the capital).

In this privately-owned facility (school), the primary school teachers are trained on the breeding of catfish in order to allow them to acquire the technical knowledge on catfish breeding.

The system comprises of an overhead tank which receives its water through pumping and then supplies the water by gravity to wooden tanks coated inside with plastic sheets. The water gets oxygenated during its trip from the overhead reservoir to the grow-out wooden tanks.

The second picture which is taken in the same facility shows the phase just before emptying of catfish out of the tank.

Permanent link to this article: http://fishconsult.org/?p=15219

Hatchery-produced seeds of marine fish in Cyprus (1991)

Review: Abdel Rahman El Gamal (Founder of the website)

During my contribution to the seminar on the research aquaculture needs in the region, I had the chance to visit two marine fish hatcheries – as far as I remember located in Limassol. The focus of the hatcheries during that time was to produce fingerlings of gilthead seabream (Sparus aurata) and European seabass (Dicentrachus labrax). I will not be surprised if the focus continues to be the same.

The artificial reproduction of the two species seemed fully mastered during that time and even simplified.  Outdoor tanks in these hatcheries are used for the spawning whereas egg ovulation and fertilization occur naturally in the tanks. Fertilized eggs float over water surface and move with the water current to a small annexed container lined by plankton net with appropriate mesh allowing an easy collection of eggs to continue the incubation, hatching and nursing in indoor facilities.

One of the hatcheries I visited (and probably the second) relied on underground water drawn from more than one well whereas water is of high quality and mostly of steady temperature. The coastal wells serving a hatchery are at different depths and salinity. This enabled the hatchery to acclimatize the produced fry/fingerlings according to the required salinity in the receiving farms. The outflow water goes through filtration and settling ponds before it is released back into the sea. My visit to the hatchery took place during the last week of October, 1991.

Permanent link to this article: http://fishconsult.org/?p=15215

Display of live catfish in traditional fish markets in Egypt

Photo credit: Marcelin Ngatcham (Cameroon)     Description: Abdel Rahman El Gamal (Founder of the website)

Fish displayed and sold in Egyptian fish markets are mostly on ice. In the past few years, there is a tendency for the sale of live tilapia from aquaculture especially higher prices has been achieved for live fish.

In regard to African catfish, Clarias gariepinus its display and sale is traditionally alive no matter whether caught from the wild or harvested from fish pond bearing in mind that catfish may be only displayed in traditional and village markets. The reason for that is because of the outstanding tolerance of this air breathing species to harsh environmental conditions such as low dissolved oxygen which makes it possible to keep the fish alive for days with simple arrangements. Dead catfish indicates to most consumers the low freshness of the fish although this may not be true. In reality, dead catfish are either processed or sold at much lower prices.

Permanent link to this article: http://fishconsult.org/?p=15203

Fish Culture Development training course – Africa (2019) – Graduation

The inserted photo was taken on October 08, 2019; the last day of the technical component of the program. The course was concluded today (October 10) as the graduation ceremony took place. Depending of flight schedules, the course participants are flying back home soon.

This 3-month course has been annually organized since 2004. The course is jointly supported by the Egyptian International Centre for Agriculture – EICA” and Japan International Cooperation Agency (JICA). It is always a pleasure to contribute to these courses and meet such wonderful group of friends. The photo shows Dr. Abdel Rahman El Gamal and the course participants: Souleymane BA and Richard Kima (Burkina Faso), Karerwa Odette and Baseka Michel (Burundi), N’Guessan Yao Joachim (Cote d’Ivoire), Hantanirina Rasoamananjara and Adavelo Jean Marcel (Madagascar), Madalitso Magombo and Camerson Ghambi (Malawi), Nancy O. Egwame (Nigeria), Sahar Mohamed (Sudan), Mussa George mndeme (Tanzania), Poukre Tchawre and Treku Komla Asafo (Togo).

Permanent link to this article: http://fishconsult.org/?p=15232

Status of red tilapia in Egyptian aquaculture – Video

This video has been compiled of four parts that have been filmed in four aquaculture projects in Egypt. Identified parts are credited to Marx Perfecto C. Garcia (Philippines) and Sherif Sadek (Egypt). The below review is my personal opinion (Abdel Rahman El Gamal – Founder the video channel)

The introduction of red tilapia into Egypt goes back to late 1980s whereas specific shipments were received from South-East Asian countries, United Arab Emirates and finally from Taiwan. Since then, red tilapia continues to exist here and there but without noticeable booming and hence it is almost not found on fish displays. When compared with red tilapia in Latin American countries (e.g. Colombia) or in Asia (Vietnam, Taiwan) and others, the status of red tilapia in Egypt did not witness comparable development. The reasons for such stagnation in red tilapia could be attributed to several factors. At the level of consumers, it was not clear that red tilapia enjoyed consumer preference especially Egyptian consumers are not accustomed to eating Sashimi that is mainly raw fish whereas red tilapia with its purple abdomen would be advantageous for such dish compared to the dark abdomens for naturally colored tilapia.

At the production levels, the reproduction of red tilapia hybrids resulted in offspring with different coloration patterns and hence the initial attractive colors were not maintained.

Added to that, the relative salinity tolerance of red tilapia and hence its potential culture in saline water was not justified since by no means, red tilapia could compete with marine fish in regard to market value highlighting that marine fish/shrimp species remain to be the candidates for marine waters. In brief, as long as the market situation as well as the production situation remains the same, there is no major change in the status of red tilapia is expected.

Permanent link to this article: http://fishconsult.org/?p=15199

Conserving measures for hilsa fishery in Bangladesh

Photos’ credit: Abu Sayed Talukder and Zahangir Alam (Bangladesh) Review: Abu Sayed Talukder and Abdel Rahman El Gamal (Founder of the website)

Hilsa is a small-size fish of hilsa fish whose scientific name is “Hilsa ilisha”; which is the synonym of “Tenualosa ilisha”. The earlier name “Hilsa ilisha” could be still in use because of its popularity and use over a long period of time. The species is highly popular and is the national fish in Bangladesh.

In order to conserve the stocks of hilsa against fishing violations, acts including the Protection and Conservation of Fish Act, 1950 have been issued to ban the fishery of the species during particular period as well as to limit the size to be fished; hilsa specimens under 23 cm is considered illegal and hence the fishing gears used to catch the species have been specified as any gill nets under 450 mm mesh size are forbidden in the fishery of hilsa.

In line with that, catching the broodstock of the species from the spawning grounds is forbidden during the peak of the spawning season in the full moon during September/October as the brood hilsa are protected for 22 days during the peak of the spawning season in October (before and after full moon).

In regard to the immature hilsa, known as “jatka”, its catch, distribution, transportation, marketing and selling is banned between November and May every year.   Building awareness on the conservation of hilsa through video shows and broadcasts on television and radio take place. This goes side by side with the enforcement of law that ultimately target to stop catching, trading, and marketing of jatka whereas Department of fisheries is in charge with the help of Police or coast guard or Navy and Magistrate. One of the inserted photos shows the action taken in a given violation where the smaller hilsa (jatka) are seized and destroyed.

Permanent link to this article: http://fishconsult.org/?p=15197

Fish Culture Development (regular training course – 2019 – EICA – Egypt)

As usually the case, my contribution to this course was yesterday (October 7) where I delivered my first lecture. This 10-week Fish Culture Development training course has been annually supported since 1988 by the Egyptian Government as represented in the Egyptian International Center for Agriculture (EICA).

The course adopts variety of training tools including lectures, practical training, field visits, specific workshops and group projects. The lectures in the course are delivered in English while simultaneous interpretation into French and Spanish takes place whenever applicable. The participants in this course are: Kally Ouindlassida and Inoussa Compaore (Burkina Faso), Yousuf Mohammed Ali Kaabi (Sultanate of Oman), Yousuf Jan and Naheed Bano (Pakistan), Sambou Jean Marie (Senegal), Hussein Ahmed Mohamed (Somalia), Mahanamanam Geeganga Gamage Gunasena (Sri Lanka), Hisham Mohamed Ahmed (Sudan), Mlaponi Farida Mohamed (Tanzania), and Dombrovska Tamara (Ukraine)

Permanent link to this article: http://fishconsult.org/?p=15228

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