KMFRI Kids Corner


  • Director KMFRI Prof. James Njiru (right) with Deputy Director Freshwater System, Dr. Christopher Aura (centre) and Ag. ADF, Kenya Fisheries Services, Mr. Simon Munguti (left) during the Launch of Electronic Catch Assessment Survey (e-CAS) system and Stake Holder’s Engagement and dissemination Workshop on Environmental Clean-up and Mentorship Framework at Sosa Cottages in Vihiga County on 4 - 5th Jan, 2021
  • Director KMFRI, Prof. James Njiru (seated, 3rd left), ECOFISH representative Mr. Kundu (seated, far right) and Inland Director of Kenya Fisheries Services Dr. Wamalwa (seated, 2nd left) with participants during the planning meeting for the Lake Victoria Frame Survey 2020 on 30th November, 2020 in Ahero, Kisumu County
  • Dr. Edward Kimani giving his presentation when ARCH Emerging Markets with Partners from IDC - Industrial Development Corporation from South Africa visited KMFRI on 12th November, 2020, the engagement revolved around an overview of the blue economy, KMFRI’s role in the blue economy initiatives, and KMFRI’s continued engagement/support in ARCH’s Cold Chain Sector investment in Mombasa
  • KMFRI team led by Dr. Christopher Aura Ag. Deputy Director Freshwater Systems (seated left) joined by the IFAD-ABDP's National Programme Co-ordinator, Mr. Sammy Macaria (seated right) on 29th September to 2nd October, 2020 for report writing workshop on the potential carrying capacity of fisheries production for small water bodies.
  • Director KMFRI Prof. James Njiru (left) with KARLO Institute Director, Dr. Theresia Munga had consultations on the development of KMFRI land in Mtwapa, Kilifi County on 30th September, 2020
  • Principal Secretary, University Education and Research, Amb. Simon Nabukwesi (centre) with CEO of National Research Fund (NRF) and KMFRI Director Prof. James Njiru (left) during a tour of KMFRI cage culture at Kibokoni, Kilifi County, a project funded by NRF on 24th September 2020
  • KMFRI Director Prof. James Njiru, gives a press briefing during the Kenya Climate-Smart Agriculture Project (KCSAP) at KARLO, Naivasha. Prof. Njiru underscored the need for aquaculture farming saying that it is the only way that a country could meet the fish demand in the country as opposed to relying on capture fisheries.
  • KMFRI Director Prof. James Njiru (4th right) accompanied by Mr. Abraham Kagwima (3rd right) and Dr. Dr Peter Odote (far left) visited KEFRI Enterprises on 11th August 2020 to learn how their successful business wing works. The model is being adopted by KMFRI Enterprise.
  • Inception and sensitization meeting: The project implementation team is led by KMFRI with research scientists Dr. Kevin Obiero (left), Dr. Domitila Kyule, Ms. Fonda Jane Awuor and Esther Wairimu.
Dr. David Mirera

Dr. David Mirera

Dr. Mirera Oersted David is a Senior Research Officer working for Kenya Marine and Fisheries Research Institute (KMFRI) and currently the Assistant Director in charge of Mariculture Research and Development. Dr. Mirera has significant experience in mariculture development in Kenya and the Western Indian Ocean (WIO) Region. He was in the taskforce that developed the 1st aquaculture policy for Kenya and is the brainchild of community mariculture development in Kenya through milkfish and mud crab farming. Has been engaged in several mariculture development interventions including providing an expert assessment of the suitability of mud crab farming in Seychelles, Potential of mariculture development in Kenya and Evaluation of the level of implementation of mariculture and fisheries interventions and collaboration between the United Republic of Tanzania and FAO. Dr. Mirera has made several innovations in mariculture that include development of drive-in cages for mud crab cages, fabrication of innovated plastic cages for mud crab fattening, design and development of simple marine earthen ponds that are regulated by the tides and introduction of freshwater Nile tilapia into marine waters. He is a mentor and supervisor of several MSc. Students from different Universities and is an external examiner to three universities in Kenya. He has successfully implemented a number of research and development projects in aquaculture with different partners.   Dr. Mirera is the leader for aquaculture under the Earth System Governance Task Force on Ocean Governance, Kenyan representative to the African Research Network for Marine Aquaculture (AFriMAQUA) project, and undertakes review for different peer reviewed journals and projects.


Task force link: Earth System Ocean Governance aquaculture taskforce:

KMFRI website link:

DIVA portal:


Publons Link:

Academia link:

KMFRI Mombasa
Aquaculture Innovations, Management of Production Systems, Marine cage design, Fish Nutrition, Marine Fish Breeding, Mariculture training and Extension
Research on aquaculture innovation, culture systems, Feed nutrition, Training and extension, development of scientific papers and policy briefs in aquaculture related issues.

PhD. Linnaeus University: Science- mud crab ecology and aquaculture 
MSc. Egerton University: Natural resource management- Mangrove fisheries 
BSc. Moi University: Fisheries – Pond dynamics in aquaculture

  1. Mirera, O. D. 2017. Status of mud crab fishery in Kenya: A review. WIO journal of marine science, 16(1), 35-45.
  2. Mirera, O. D. 2017. Intertidal mangrove boundary zones as nursery grounds for the mud crab, Scylla serrata (Forsskal-1775). African journal of marine science. African Journal of Marine Science, 39: 3, 315-325.
  3. Moksnes P, Mirera O. D, Lokina R, Ochiewo J, Mahudi H, Jiddawi N, Hamad M and Troell M. (2015). Feasibility of extensive, small-scale mud crab (Scylla serrata) farming in East Africa. WIO journal of marine science, 14 (1&2): 23-38.
  4. Moksnes, P-O, Mirera, O. D, Bjorkvik, E, Hamad, I. D, Mahudi, H. M, Nyqvist1, D, Jiddawi, N, Troell, M. (2015). Natural growth of Scylla serrata in East Africa: A valuable tool for assessing growth of mud crabs in aquacultures. Aquaculture research, 46: 2938–2953
  5. Mirera, O. D., and Mosknes, P-O, (2015). Comparative performance of wild juvenile Scylla serrata (Forsskål) in different culture systems: net cages, mangrove pens and earthen ponds. Aquaculture international, 23:155–173
  6. Mirera, O. D., Ochiewo, J., Munyi, F. 2014. Social and economic implications of small-scale mud crab (Scylla serrata) aquaculture: the case of organised community groups. Aquaculture International. 22:1499–1514
  7. O. D and Moksnes. P-O (2013). Cannibalistic interactions of juvenile mud crabs (Scylla serrata): The effect of habitat and crab size. African Journal of Marine Science 35: 545-553
  8. Mirera, O. D, Ochiewo J, Munyi F, Muriuki T. (2013). Heredity or traditional knowledge: Fishing tactics and dynamics of artisanal mangrove crab (Scylla serrata) fishery. Ocean & Coastal Management. 84: 119-129
  9. Mirera O. D. (2012). Mariculture development in Kenya-an overview In Troell, M., Hecht,T., Beveridge, M., Stead, S., Bryceson, I., Kautsky, N., Mmochi, A., Ollevier, F. (eds) (2011) Mariculture in the WIO region – challenges and prospects. WIOMSA Book Series No. 11. viii+59pp.
  10. Mirera, O. D. (2011). Trends in exploitation, development and management of artisanal mud crab (Scylla serrata-Forskall-1775) fishery and small-scale culture in Kenya: An overview. Oceans and Coastal Management. 54: 844 – 855
  11. Mirera H. O. D. (2011). Experimental polyculture of milkfish (Chanos chanos) and Mullet (Mugil cephalus) using earthen ponds in Kenya. WIO Journal of marine science. 10(1): 59-71
  12. Mirera, O. D., Kairo, J. G., Kimani, E, N and Waweru, F. K. (2010). A comparison in fish assemblages in mangrove forests and on intertidal flats at Ungwana bay, Kenya. African Journal of Aqautic Science, 35 (2): 165-171.
  13. Mirera, O. D. (2009). Mud crab (Scylla serrata) culture, undertanding the technology in a silvofisheries perspective. WIO Journal of Marine science. 8 (1): 127-137
  14. Mirera, O. D. and Mtile, A. (2009). A preliminary study on the response of mangrove mud crab (Scylla serrata) to different feed types under drive-in cage culture system. J. Ecol. Nat. Environ. Vol 1 (1), 7 – 14.


  • Proposal reviewer for British Ecological Society grants
  • External examiner in different universities in Kenya for thesis examination
  • Wageningen University Centre for Development Innovation; fisheries group
  • Member Western Indian Ocean Marine Science Association (WIOMSA)
  • Sustainable Aquaculture Research networks in Sub-Saharan Africa/networking aquaculture practitioners and scientist across the world
  • World Aquaculture Society
  • NEMA registered EIA associate expert
  • Reviewer with several international journals including: WIO journal of marine science, Ocean and coastal management, Aquaculture research, Aquaculture international.
  • Reviewer with Indian Ocean Commission biodiversity project
  • Earth Systems Governance (ESG), Taskforce leader – Aquaculture