The haematology of wild and laboratory acclimated Labeo umbratus (Teleostei; Cyprinidae)

The haematology of the mudfish (Labeo umbralus) has been studied in the laboratory and in the wild state. Significant differences between laboratory and field data and also between field data obtained for fish from different localities were observed in several of the parameters studied and the results are considered in relation to the validity of extrapolation of laboratory data to field conditions.