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Ethiopian Fisheries and Aquatic Sciences Association (Efasa) Proceedings of the First Annual Conference of EFASA (February 15-16, 2009) THE ETHIOPIAN FISHERIES AND AQUATIC SCIENCES ASSOCIATION (EFASA) Proceedings of the First Annual Conference of EFASA Held at Zwai Fisheries Resources Research Center Zwai, Ethiopia February 15‐16, 2009 Pan- African Fish and Fisheries Zwai Fisheries Resources Association Research Center EIAR Ministry of Science and Technology ~ 1 ~ Proceedings of the First Annual Conference of EFASA (February 15-16, 2009) TABLE OF CONTENTS Welcoming address ....................................................................................................... 3 Opportunities for enhancing freshwater fish production in Ethiopia ........................... 6 Zeway Fisheries Resources Research Centre, A place where the 1st EFASA Conference is held ....................................................................................................... 17 On‐station evaluation of cold, cooked and fried marinated fish ................................ 19 Aquaculture possibilities in ethiopia ........................................................................... 25 Adaptation and growth performance of Nile tilapia (Oreochromis niloticus) in integrated fish farming on North Western Amhara Region ........................................ 65 Integrated aquaculture potentialS in Ethiopia ............................................................ 80 Distribution and abundance of macro‐benthic and weed‐bed fauna in the northwern part of Lake Tana, Ethiopia ....................................................................... 99 Species composition and relative abundance of fish species in major rivers of Amhara Region, Abay and Tekeze Basins, Ethiopia................................................... 117 Aquaculture Scenario in oromia ................................................................................ 132 The prevalence of internal and external parasites of oreochromis niloticus l. collected from lakes and ponds in ethiopia .............................................................. 142 Survey of a newly constructed reserrvoir, Tekeze Hydropower Dam, Ethiopia ....... 149 Spatial and temporal variation of fish communities in lake langeno ........................ 166 Assessment of major threats of Lake Tana and strategies for integrated water use management ....................................................................................................... 174 Handling, marketing and hygienic conditions of fish and fish products in Addis Ababa fish shops ....................................................................................................... 192 Integrating cage fish farming system in temporary water bodies, ponds and reservoirs: The BOMOSA experience in Ethiopia ...................................................... 202 First Annual Conference of EFASA recommendations by members ......................... 215 ~ 2 ~ Proceedings of the First Annual Conference of EFASA (February 15-16, 2009) WELCOMING ADDRESS Dear our guest of honor Dr. Assefa Te’a, Deputy-Director, Oromia ARI Professor Shibru Tedla Invited guests Fellow participants Ladies and gentlemen It gives me a great pleasure to welcome you all here at Zwai Fisheries Resources Research Center and consider it already a great achievement for the Executive Committee of EFASA and the organizing committee at this same center for getting us all to this historic day with success. I thank also Ato Getachew Senbete, Director of the Zwai Fisheries Resources Research Center, his group of scientists and the support staff for hosting this annual EFASA conference and the most exciting excursion we had yesterday on Lake Zwai. Having said that I would like to seize this opportunity and reflect a little on the establishment of EFASA. The idea of establishing an association like EFASA has been rolling in the minds of national scientists faster and lauder as their number increased over the years. For pioneer scientists like Professor Shibru Tedla here, I would say it is such a remarkable experience not many have the pleasure of enjoying it. It is beyond my imagination to anticipate the joy he feels now as he sits among so many of us today and when he reflects back on the days he was the only scientist in the field in this country. Since Professor Shibru inaugurated the establishment of EFASA back in February 2008, it has accomplished some important tasks. These include: To get us to the inauguration day in February 2008, some senior members, namely, Dr. Seyoum Mengistou, Dr. Abebe Getahun, Ato Tadesse Fetahi, now PhD candidate, and myself have untiringly worked to finalize the legal formalities of EFASA. At the inauguration, 67 professionals and invited guests showed up, including Professor Shibru Tedla, and put together the present executive committee. ~ 3 ~ Proceedings of the First Annual Conference of EFASA (February 15-16, 2009) Following the inauguration conference the EC members of EFASA worked further to obtain official accreditation of the EC members by the special section of the Ministry of Justice. EFASA had also the pleasure of organizing the Pan African Fish and Fisheries Association (PAFFA) in September 2008 lead by the executive leadership of Dr. Abebe Getahun, now president of the same. The PAFFA conference gave EFASA the opportunity to interface itself with international institutions and senior personnel and acquire experience in organizing international gatherings. The EC members have actively participated in formulating the programs of this conference, soliciting funds and generally managing the process that brought us to this day. At this juncture, it gives me a great pleasure to warmheartedly thank Dr. Seyoum Mengistu and Dr. Abebe Getahun for their unreserved support and actions that made this conference a reality. It may be an inspiration to some of us here to know that because of the crowded nature of our daily schedules. There were times that we had to discuss some issues over lunch and disperse soon after to our daily routines of meetings, lectures and management responsibilities. Ladies and Gentlemen On behalf of EFASA and myself I would like to thank the following institutions that supported us financially and technically in running this conference. These are: The Pan African Fish and Fisheries Association (PAFFA) The Horn of Africa Regional Environment Centre and Network Haramaya University The Joint Ethio-Russian Biological Expedition (JERBE) The Ministry of Science and Technology Office of the Vice President for Graduate Studies and Research of Addis Ababa University Office of the Vice President for Business and Development of Addis Ababa University And my special thanks also go to the Zwai Fisheries Resources Research Center and the EC of EFASA for organizing this conference. In this remaining one day of deliberations on various aspects of fishes, fisheries and aquaculture, we have the opportunity before us to listen to 19 papers. I am confident that by the end of the day we will have a lot of synthesized knowledge on the theme we set out to address and establish lasting contacts among ourselves for future collaborations. I however ~ 4 ~ Proceedings of the First Annual Conference of EFASA (February 15-16, 2009) advise presenters and responsible chairs to keep the time of presentations as programmed, since covering 19 papers within a day is an awesome task. Finally thanking you all once again for coming here to this annual conference and giving me so much of your time, I wish you very successful deliberations. Thank you, Brook Lemma, Dr., President of the Ethiopian Fisheries and Aquatic Sciences Association, EFASA ~ 5 ~ Proceedings of the First Annual Conference of EFASA (February 15-16, 2009) OPPORTUNITIES FOR ENHANCING FRESHWATER FISH PRODUCTION IN ETHIOPIA Shibru Tedla1 It is always a pleasure to be amongst colleagues and share experience, with the added advantage of touching base with them, some I have known for nearly half a century or so, and many more for decades. Thank you for providing me with this opportunity. I would like to see fisheries and aquatic resources in terms of food insecurity in Ethiopia, a chronic problem which could be partially ameliorated though availing some protein sources-such as fish. This is no innovation; in fact PASDEP- Plan for Accelerated and Sustained Development to End Poverty- has taken note of fisheries in its strategic plan as an input towards poverty eradication. Ethiopia is a country beset by each of the most serious issues currently challenging the world at large. Rising food prices threaten to unhinge progress in the government’s Food Security Programme; climate change seems likely to increase the visitation of draught which is a major cause of widespread poverty in Ethiopia, while the army finds itself in the front line against the regional threat of militant Islam. Whatever its failings, the Ethiopian government has done nothing to deserve the uncertain fate climate change will impose on a social infrastructure that has virtually no capacity to adapt. OPPORTUNITIES FOR FISHERIES DEVELOPMENT PASDEP stated that ‘in order to increase fish production in a sustained manner, the activities to be undertaken revolve around the introduction of appropriate technology that provide for proper care of existing lakes as well as production of fish without risking the natural balance of fish population……’. It goes further to state ‘Fishery production will be expanded in areas that are rich in water resource availability as well as dams and
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