Mastacembelus armatus (Lac) has bimodal gas exchange mechanism as the fish uses both the gills and skin to obtain 02 from water. The skin can obtain 02 both from water as well as air. 02 consumption in this mud eel have been determined by the method as followed by Kumar and Ahsan (2018) at the water temperature 20.0±1.0°C (winter) and 30.0±1.0°C (Summer). The statistical relationship between 02 consumption (V02) vs. body weight during winter (20.0±1.0°C) and summer (30.0±1.0°C) months are represented by the equation :- V02 (ml/hr) = 0.1397.14/97286 and V02 (ml/hr) = 0.219514r1° respectively. The details have been discussed in this paper in the light of thermal compensatory metabolic regulation in this fish.