Journal of Fisheries and Aquatic Science1816-49271996-0751Academic Journals Inc.10.3923/jfas.2022.1.8BernardEdah AdetolaOke 12022171Background and Objective: Fishmeal is considered the most expensive major source of protein commonly used in domestic animal feeds and in commercial aquafeeds. This study aimed to investigate the proximate composition, mineral contents and heavy metal contamination of the five most populous fishmeal available within the South-West of Nigeria. Materials and Methods: Samples were collected from commercial fishmeal whole sellers and analyzed accordingly. Proximate composition, mineral contents and heavy metal composition determined. Results: Results reveal significant differences (p<0.05) in the values obtained. For proximate composition, Carbohydrate, Crude Protein, Crude Fat, Moisture Ash and Crude Fibre contents ranged from 6.27±0.07-19.87±0.10, 52.13±0.04-81.38±0.15, 3.73±0.06-6.84±0.05, 2.89±0.06-8.6±0.07, 4.08±0.06-5.21±0.02 and 1.65±0.02-9.3±0.14% among samples, respectively. Mineral contents (Na, K, Ca, Fe, Mg, P) for all five samples were significantly different at (p<0.05), while values of heavy metal contents revealed Cd, Pb, Hg, Cu, Zn and Cr concentrations ranging between 0.003±0.002-0.082±0.02, 0.002±0.02-0.00, 0.0016±0.00-0.0061±0.00, 0.291±0.03-1.059±1.56, 1.02±0.27-2.534±0.36 and 0.001±0.00-0.015±0.00 mg kg1, respectively. However, some values fell above the FAO/WHO permissible limit for heavy metals. Conclusion: It was concluded that more attention should be given to the sources of fishmeal used in feed production and constant monitoring of their chemical composition as not all fishmeal sold commercially are high-grade fishmeal.]]>Khan, N., N.A. Qureshi, M. Nasir, G.W. Vandenberg and M.S. Mughal et al.,2012Labeo rohita, Catla catla and Cirrhinus mrigala) fed in monoculture and polyculture systems.]]>32349353Kok, B., W. Malcorps, M.F. Tlusty, M.M. Eltholth and N.A. Auchterlonie, et al.,20202020Cashion, T., F.L. Manach, D. Zeller and D. Pauly,201718837844Jannathulla, R., V. Rajaram, R. Kalanjiam, K. Ambasankar, M. Muralidhar and J.S. Dayal,20195034933506Ibiyo, L.M.O., R.M.O. Kayode, A. Oresegun, O. Mogaji and F.O. Joshua,2018Clarias gariepinus fingerlings.]]>23137Amman, H., I. Muzaffar and S. Fatima,20208654656Ponce, L.E. and A.G. Gernat,20028110451049Jahan, H., I.J. Tumpa, W.A. Qasem, M. Moniruzzaman and M.A. Pervin, et al.,2021Barbonymus gonionotus.]]>2021Kim, K.W., M. Moniruzzaman, K.D. Kim, H.S. Han, H. Yun, S. Lee and S.C. Bai,2016Oplegnathus fasciatus.]]>8239245Abdel-Warith, A.W., N. Al-Asgah, Y. El-Sayed, A. El-Otaby and S. Mahboob,2018Oreochromis niloticus.]]>79703711Neto, R.M. and A. Ostrensky,2014Oreochromis niloticus L.): Nutritional and environmental implications.]]>21311320Khosravi, S., S. Rahimnejad, M. Herault, V. Fournier and C.R. Lee, et al.,201545858868Iqbal, S., U. Atique, S. Mahboob, M.S. Haider and H.S. Iqbal et al. 2020Oreochromis niloticus).]]>3226102616Frempong, N.S., T.N.N. Nortey, C. Paulk and C.R. Stark,201928912918Christopher, A.E., O. Vincent, I. Grace, E. Rebecca and E. Joseph,2009 Oreochromis niloticus from Henshaw Town Beach market in Calabar Nigeria.]]>812091211Kan, C.A. and G.A.L. Meijer,200713384108Akan, J.C., F.I.A. Abdulrahman, V.O. Ogugbuaja and J.T. Ayodele,20096534542Zhao, P., Y. Li and Y. Lu,20102010Satpathy, L., D. Dash, P. Sahoo, T.N. Anwar and S.P. Parida,2020912751283Valko, M., H. Morris and M.T.D. Cronin,20051211611208Zar, H.J.,20105th Edn.,pp: 944pp: 944Ween, O., J.K. Stangeland, T.S. Fylling and G.H. Aas,2017Gadus morhua L.) and saithe (Pollachius virens).]]>2017Ayssiwede, S.B., J.C. Zanmenou, Y. Issa, M.B. Hane and A. Dieng et al.,201110707717Moghaddam, H.N., M.D. Mesgaran, H.J. Najafabadi and R.J. Najafabadi,20076354361Cho, J.H. and I.H. Kim,201095685692Uzairu, A., G.F.S. Harrison, M.L. Balarabe and J.C. Nnaji,200923917Ekpo, U.F., S.N. Odoemene, C.F. Mafiana and S.O. Sam-Wobo,20082008Anhwange, B.A., E.B. Agbaji and E.C. Gimba,20122248254Adamse, P., H.J. (Ine) van der Fels-Klerx and J. de Jong,20173412981311Kamaruzzaman, B.Y., M.C. Ong, S.Z. Rina and B. Joseph,201010157161Mannan, M.A., M.S. Hossain, M.A.A. Sarker, M.M. Hossain, L. Chandra, A.H. Haque and M.K. E-Zahan,20182018Salawu, Y., S.I. Yakubu, M. Garba, M. Usman and A.I. Yakasai,20162016Murthy, L.N., C.O. Mohan, C.N. Ravishankar and R. Badonia,201360113117Abdel-Warith, A.A., E.M. Younis, N.A. Al-Asgah and O.M. Wahbi,2011Oreochromis niloticus.]]>637603769Pechova, A. and L. Pavlata,200752118Dayan, A.D. and A.J. Paine,200120439451Adeniji, C.A. and O.O. Okedeyi,20172017