OGWAI has been working on fish health research unit at the KMFRI fresh water systems (KMFRI-FWS) since 1988. He currently holds a senior position as a research scientist I. He has done several international research expeditions in France, Belgium and Netherlands. He has also done several local research expeditions in Lakes; Naivasha, Turkana, Baringo, Sare, Kanyaboli, and Victoria. He has participated in several International, regional and national fisheries conferences and workshops in Tanzania, Burundi and Kenya.

His current research focus is on aquatic biosecurity. He has published extensively in journals, conferences and national ecological newsletters. He is also an opinion leader and a member of several development committees and forums; Forum for Advancing Rural Action on HIV/AIDS and Development (FAVRA+) at the grassroots community level in Homa Bay County.

Research Networks: ResearchGate

• Ogwai, C., Mwainge, V., Aura, C., Nyamweya, C., Odoli, C., and Mwamburi, J. (2019). Co-infection of the zoonotic Clinostomum sp and other diseases of fish of the Lake Baringo ecosystem. Journal of Aquatic Ecosystem Health.
• Ogwai, C., Odoli, C., Kobingi, N., Mugo, J., and Babu, J. (2018). Assessment of the Status of fish Pathogens in Lake Baringo. Technical report KMF/RS/2018/C.2.9(iii). Kenya Marine and Fisheries Research Institute. 28pp.
• Elijah Oyoo Okoth, Wim Admiraal, Odipo Osano, Michiel H.S. Kraak, Pamela J.A. John Gichuki, Ogwai, Caleb. 2012. Parasites modify sub- cellular Partitioning of Metals in The Gut of Fish. Journal of Aquatic Toxicology 106-107: 76-84
• Elijah Oyoo Okoth, Wim Admiraal, Odipo Osano, Michiel H.S. Kraak, Pamela J.A. John Gichuki, Ogwai, Caleb 2013. Dynamics of Metal Uptake and Depuration in a Parasitised Cyprinid Fish Rastrineobola argentea in Lake Victoria. Journal of Aquatic Toxicology 124-125:34-40.
• Ogwai, C.O¹., Aloo, P. A², Lester, R.J.G³, Oyugi, D.O⁴, Oyoo, E⁵, and Semo, C⁵.,
• The parasite, Henneguya ghaffari (Myxozoa:Myxosporea), infecting the Nile perch Lates niloticus in Lake Victoria Kenya. Fifth International Conference of the Pan African Fish and Fisheries Association (PAFFA V). Bujumbura Burundi, 16^th-20^th September 2013. Abstracts Vol. p 60.
• Ogwai A. C. 2010. The Distribution and Behavioural effects of a Cestode Parasite Ligula intestinalis in an Intermediate Host, Rastrineobola argentea in the Lake Victoria, Kenya. Proc. Of the Moi University 6^th Annual International Conference on Knowledge Management and Applied Technological Innovations for Sustainable Development. 7^th -11^th Sep. 2010. p27.
• Ogwai, A. C. 2005.  Status of Fish health Documentation in the Lake Victoria and the surrounding small water bodies. Proceedings of the International Lake Environements Committee (ILEC), 31^st -4^th November 2005, Nairobi, on Management of lake basins for their sustainable use: Global experience and African issues. Abstracts Volume p87.
• Ogwai, A. C., 2005.  Some aspects of the biology of the parasite Ligula intestinalis infecting Rastrineobola argentea (PELLEGRIN 1904) in lake Victoria, Kenya. Samaki news. A magazine of the department of fisheries, Kenya. Vol. 5, no. 1, p53-55
• Ogwai, A. C.,1998.  The parasite Fauna of  Rastrineobola argentea (Pellegrin 1904) with reference to Ligula intestinalis in the Kenyan part of Lake Victoria.  M. Sc. Thesis Free University of Brussels Belgium. pp76.
• Ogwai, A. C., & Mutwiri, J. G.,1995.  Observations on the parasitic infestations of Rastrineobola argentea (Pellegrin 1904) by the pleurocercoids of the parasite Ligula intestinalis. Proceedings of the First Pan African Fisheries Congress on sustainable development of fisheries in Africa. p88-89.
• Ogwai, A. C.,1991. The occurrence of ichthyoparasites and their effects on the Fisheries of Lake Victoria.  Proceedings of the second EEC Regional Seminar on the Recent trends of Research on Lake Victoria Fisheries, ICIPE SCIENCE PRESS, ISBN 92 9064 0789, pp120-130.