Nov 11 2018

Fish Culture Development (regular training course – 2018 – EICA – Egypt)

Because of travels during October, my contribution to this year course has been delayed to today 11 November as I delivered my first lectures. 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). As usual, lectures in the course are delivered in English while simultaneous interpretation into French and Spanish takes place. The participants in this course are:

Ariel Martin Belavi (Argentina), Niampa Moussa (Burkina Faso), Armando Romero (El Salvador), Andria Melissa Ochoa Rodas and Leonel Antonio Zelaya Cerezo (Guatemala), Aritra Bera (India), Muhammad Bin Mohd Sabri (Malaysia), Mohammad Sohrab Magsi (Pakistan), Davis Alberto Gonzalez Samaniego (Panama), Hermes Ariel Montiel Benitez (Paraguay), Marx Perfecto C. Garcia (Philippines), Hadia Adam Mamour (Sudan), Ignacio Marcos Quartiani Zubieta (Uruguay), Lam Thi Huyen Tran (Vietnam), and Nathan Chama (Zambia)


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Nov 07 2018

Rainbow trout from grow-out tanks to restaurant tables in San Mateo (Peru)

Photos’ credit: Jhons Huayanay Ostos (Peru)

Review: Jhons Huayanay Ostos and Abdel Rahman El Gamal (Founder of the website)

The inserted photos show the culture of rainbow trout (Oncorhynchus mykiss) in Peru. The farm is located in San Mateo,  Huarochiri region, Lima. The river water is the water source for the farm. The minimum and maximum water temperature is 7 and 15 Celsius respectively. The grow-out tanks are circular with a 10-meter diameter and 1.5-meter depth.

The stocking density in this farm is 14 fish/m2 while the production is 10 kg/m2.  During the grow-out, fish are feed on commercial trout feed with 50% protein.

It may be of interest to know that this farm arrange farm visits during which visitors can fish the trout from the farm ponds and then their catch is prepared the way they like in a restaurant that is annexed to the farm.

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Nov 07 2018

Dagaa dominates the dried-fish market in Tanzania – Video

This video was filmed in a village market at Kilimanjaro (Tanzania). As expected, the as a village market, very many items are vegetables, fruits, home utilities, and a lot more. In regard to fish, only dried, salted and smoked fish are displayed.

Dagaa, such small fish whether dried/salted, and or smoked seemed dominated the fish displays in the market which most likely indicating the importance of dagga in the people’s diet especially in rural areas.

The sale of dagaa is by scoop as shown in the video as each size of the containers has its price. Few dagaa displays might have some smoked catfish and tilapia in a way to satisfy the consumer demand. It was very obvious that women control the market of dried fish in village markets.

Dried dagaa is produced by sun-drying which is often done by women. It takes one day or more to complete the sun-drying depending on the weather.

This small fish is the silver cyprinid, (Rastrineobola argentea) that is produced mainly from Lake Victoria. Dagaa fishing in Lake Victoria is done using light attraction during moonless nights where 10-mm mesh nets is the official size.

Unlike other small fish in Lake Victoria, “dagaa” –being a fast swimmer- was able to withstand the predation pressure caused mainly by the introduced Nile perch, (Lates niloticus). That is why “dagaa” is not considered a threatened species by the IUCN.



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Oct 27 2018

Integrated fish-duck farming in Tanzania (Video)

The inserted video was filmed in a fish farm located in Kibisho (Kilimanjaro – Tanzania). Different types of integration are practiced on the farm including aquaculture-agriculture and aquaculture-duck production. The present video shows the fish-duck integration. The farm keeps two local strains of ducks which are reproduced on the farm through an incubator (not shown in the video). We have been told, no ducks have been sold for their meat until now and that is why one can see on the video ducks of different ages do exist. However, we have been told that once the number of ducks meets the requirement of fish ponds, extra ducks will be sold. The facility shows a shelter in which nursing of ducklings and feeding take place. The fish grown in the ponds are either Nile tilapia or African catfish. The present production of the farm is 50 – 60 tons of fish/year.


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Oct 25 2018

The size of feed pellet and the width of fish mouth – Video


The inserted video shows the feeding of tilapia fingerlings. As shown in the video, the size of the floating pellets is too large to be swallowed by the fingerlings that are chasing the feed trying to get a bite after another. In this case, fish will spend unnecessary extra energy during feeding that would otherwise be used for growth. Moreover, higher rates of feed loss are expected through the leaching of pellet remains in the water column. In general, the pellet size is considered optimal at 25% – 50% of the width of fish’s mouth.

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Oct 24 2018

A happy moment in Mwarda fish market (Sudan)


Thanks to friends who captured this happy moment while visiting Mwarda fish market (Sudan) and handling a specimen of elephant-snout fish.  How nice we were able to laugh from the heart.  No matter how our work schedule is tight and life turns busy, we need a moment to relief hearts. Thanks to the kind persons from the market who shared me this exceptional happy moment.



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Oct 24 2018

Initial applications of chicken manure in fish ponds (Video)

This video has been filmed during a training program held at the World Fish Center (Egypt). The present demonstration shows the spread of chicken manure over the entire bottom of the pond which is prepared for fish stocking. Typically, after the spread of the chicken manure, water is raised for about 15 to 20 cm in order to encourage the decomposition of the manure before raising the water higher.

As we know, the decomposition of organic manure requires oxygen obtained from the water and hence before fish stocking, an analysis should be done to ensure that the decomposition process is complete and the dissolved oxygen is normal. Unfortunately, if the stocking was done prior to the full decomposition of the manure, stocked fish may experience a significant stress due to the low dissolved oxygen which may lead to fish kill. In the absence of measuring equipment, a field test can be done through stocking some specimens of target fish into a small cage or hapa placed in the fertilized and watch for their performance and and/or survival.

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Oct 20 2018

A quick tour in Mwarda fish market in Umdorman Sudan (Video)

This video was filmed in Mwarda fish market which is located in Umdorman. All fish displayed is freshwater fish with tilapia is the most preferred and traded species in the market. There are quite a few species other than tilapia including African catfish, Nile perch, and others. The market has a designated part for simple fish processing such as gutting and filleting. Friday –being the weekend- is the busiest day of the week.


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Oct 18 2018

Bluefin tuna from the Mediterranean waters to the fattening cages in Libya (Video)

Video credit: Abdallah Elmgawshi (Libya)

Review: Abdallah Elmgawshi and Abdel Rahman El Gamal (Founder of the video channel)

The video was filmed in the north of Mosrata (Libya) during May, 2012.

Once a squadron of Bluefin tuna (Thunnus thynnus) is spotted using telescopes or fish finders, its location is identified and approached quickly. Then the bait of sardines is thrown in large quantities over a short period of time (about 20 min) to enable the circling of tuna with a large seine.

The divers are responsible for estimating the number of tuna specimens confined within the fishing seine. They are also responsible for connecting the fattening cage to the fishing seine.

The tunas passing from the large circular seine into the target cage are photographed and displayed on a monitoring apparatus in the attendance of the representatives from the vessel, Libyan marine resources and ICCAT “Iinternational Commission for the Conservation of Atlantic Tunas”. Once the target number of tuna specimens for a given cage is reached, the cage opening is closed and pulled away at one-knot speed to the fattening location.

In such fishing process, several vessels are involved to support the main fishing vessel. The same is true in regard to the fishing crew including the sailors, divers and others.

According to the fishing report for this particular fishing trip, 1503 specimens of Bluefin tuna were caught with a total weight of 222 tons.

This method of tuna harvest is preferred when live tuna is targeted for further fattening in cages.

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Oct 18 2018

Aquaculture training workshop in Sudan (7 – 11 October, 2018)

This group picture was taken in the first day of the aquaculture training workshop that was held in Khartoum and organized by the Agricultural Bank of Sudan during the period 7 to 11 October, 2018. This program is conducted under the South-South Cooperation Initiative and supported by Food and Agriculture Organization of the United Nations (FAO), Egyptian International Centre for Agriculture (EICA) and the Egyptian Agency of Partnership for Development (EAPD).

As planned, the workshop adopted several training tools starting with a preliminary presentation which I delivered in the first day. The field visits took place during the second and the third days while during the last two days several activities have been have been done including tailored lecturing, brain storming and ending by a development plan for enhancing the aquaculture production in Sudan over s definite period of time. I feel very pleased regarding the outcome of the whole event.

This event hosted 30 participants who belong to Ministry of Livestock, Ministry of Agriculture, Research centers and the Agricultural Bank of Sudan. The name of this workshop participants are:

Abdelmalik Mohamed, Alalem Hamid, Amna Abdalla, Bakri Bushra, Ebtessam Abdallah, Essam Eldin, Fadl El Mawla, Fatima Elmahdi, Fatima Yousif, Hatim Alzain, Hiam Maysara, Howeida Yahia, Ibrahim Mostafa, Magda Abdelmegid, Mamoun Ahmed, Mamoun Mekawi, Marwa Abdeljalil, Mohamed Adam, Mogahed El Kher,  Mohamed Fasel, Mohammed Omar, Mona,  Motasim Soleiman, Mutasim Yousef, Noha Elmofti, Randa Eltayeb, Salim Aboubakr, Salma Hassan, Sakina Hassan, Yassine Mubarak


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