A.I. OKAFOR
Abstract
Blood osmolality adjustments in the African lungfish, Protopterus annectens (Owen) following acclimation to acid water was investigated. Healthy adult specimens of the African lungfish, Protopterus annectens. 0 (mean weight 295.5g, mean length 36.7cm) procured from Oguta lake at Oguta Nigeria were subjected to acid water of the following pH values - 4.6, 5.2, 5.8, 6.4, 7.0 and 7.6 respectively. The results revealed that reduction in water pH had significant negative correlations (r = - 0.973756, -0.979796, -0.976473 p<0.05) with blood osmolality Na+ and K+ concentrations respectively. The essence of the findings in the culture of this specie of fish in acid water regimes are discussed.