STUDIES ON CONCENTRATION OF HEAVY METALS IN TISSUES OF FISH SPECIES (Clarias gariepinus and Oreochromis niloticus) IN LOWER RIVER NIGER AT GEREGU AJAOKUTA, KOGI STATE, NIGERIA. Nigerian Journal of Animal Production [Internet]. 2025 Mar. 20 [cited 2026 Nov. 10];:1856-9. Available from: https://mail.njap.org.ng/index.php/njap/article/view/8638