iarjalsIARJALSIARJALS2708-5104https://doi.org/10.47310/iarjals.2021.v02i01.040Enzymes Activities in the plasma of Clarias gariepinus and Heterobranchus longifilis Reared in Different Culture SystemsMomohY.MAqua Green Integrated Ltd, Ambassador Joe Ehoro Crescent off School Road, Elelenwo Port Harcourt, Rivers State, Nigeria.This study assessed  the enzymes activities in the plasma of Clarias  gariepinus  and Heterobranchus  longifilis reared in different culture systems. A total of two thousand eight hundred and eighty (2,880) fingerlings of two species consisting of 1440 Clariasgariepinus(mean length 5.42cm ± 0.67 and mean weight 3.34g± 0.33SD) and 1440 H.longifilis (mean length 5.43cm ± 0.88 and mean weight 3.35g± 0.31SD) were reared in four different  aquaculture enclosures namely: earthen ponds, tarpaulin, concrete and plastic tanks of the same dimension (1.0 x 1.0 x1.2m3) for a period of 12 weeks.  The results obtained, indicated that enzymes activities such as Acid Phosphatase (ACP); Alkaline Phosphatase (ALP); Aspartate Transsaminase (AST); Alanine Transaminase (ALT) and Lactate Dehydrogennase  were significantly (P <0.05) elevated in the plasma of cultured fish, which was more pronounced in those reared in concrete and plastic tanks. Based on the results of this study, rearing of C. gariepinus and H. longifilis in tarpaulin tank is most effective and ideal method for fish production if the target is to attain fast growth and good health condition of the fish.