Available studies directing to aquatic temperature in Niger Delta aquatic ecological systems was carefully studied and developed as a review that takes on the tempo-spatial variation in that systems, the essence of being knowledgeable in facts relating to aquatic temperature of ecological systems, the vital points in the development of aquatic temperature modelling through its measurement, anthropogenic agenda that modify the aquatic temperature, the impact of temperature changes on the physico-chemical parameters of aquatic system; and on aqua-biota. Various ways of assessing the impacts of temperature variations in aqua-biota are spelled out and aquatic temperature criteria for the protection of aqua-biota are detailed. This review paper beams on the complexity of aquatic temperature in the ecological system; the need of being knowledgeable in tempo-spatial variability, the various responses of aqua-biota to temperature thermal stress; the anthropogenic agenda that modified the aquatic temperature and the current threat to aquatic ecology systems the climate change.