Kenya Aquatica

  • PS SDFA & BE Dr Francis Owino (centre), KMFRI BoM Chair Hon John Mumba (2nd right), KMFRI Director Prof James Njiru (left) during a courtesy call to Mombasa County commissioner Mr Gilbert Kitiyo.
  • The newly appointed Principal Secretary SDFA & BE Dr Francis O. Owino (seated centre) during his maiden visit at KMFRI Mombasa headquarters on 2nd March 2021.
  • Kenya Launches a coral reef fish project (Funded by Japan/FAO) to improve food security, livelihoods and maritime safety through increased resilience of coastal fishing communities
  • KMFRI Mombasa Center Director, Dr. Eric Okuku (centre) representing KMFRI Director and Assistant Director (Projects & Collaborations/CD Shimoni) Dr. James Kairo (right), meet Dr. Mathieu Guerin from France Embassy to explore possible research collaboration with French institutions.
  • KMFRI Director, Prof. James Njiru (right) exchange MoU with VC Pioneer International University, Dr Gideon Maina (left), this SDFA & BE MoU is on several areas of collaboration that includes Kenya Fisheries Services. The ceremony was witnessed by outgoing PS Prof. Micheni Ntiba on on 22nd Feb. 2021at Kilimo House, Nairobi
  • KMFRI Director, Prof. James Njiru (right) and Mombasa CD, Dr. Erick Okuku during the World Wetlands day on 2nd February, 2021 held at Sabaki Estuary, the celebration was officiated by the CS for Environment and Forestry Mr. Keriako Tobiko who led government officials and communities in planting mangrove trees
  • 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
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