Abstract: Background and Objective: The productivity of rice-fish culture mostly depends on the nutrient management and proper fish species selection. A study was conducted to evaluate the effect of plant nutrient management on the productivity of rice-fish culture. Materials and Methods: High yielding Boro rice variety BRRI dhan 29 was used in this study. Factors included 6 different plant nutrient management viz. (1) No fertilizer/manure, (2) Recommended fertilizer (RF) for rice, (3) 75% RF, (4) Compost at the rate of 10 t ha–1 and (5) Compost at the rate of 5 t ha–1+75% RF, (vi) Compost at the rate of 5 t ha–1+50% RF and 3 fish species such as (1) No fish, (2) Tilapia and (3) Common carp. Results: Rice plant growth was significantly affected by nutrient management but not by fish species. All the yield parameters were influenced by nutrient management but only grains/panicle was influenced by fish species. Recommended fertilizer resulted in the highest grain weight/hill. Integration of fish with rice resulted in higher grain weight/hill of rice compared to rice sole culture. Rice sole culture and rice-fish culture produced similar grain yield. Tilapia yielded the highest with 75% RF+compost at the rate of 5 t ha–1 (545 kg ha–1) or with 100% RF (514 kg ha–1). While for common carp, application of compost at the rate of 5 t ha–1+50% RF yielded the highest (625 kg ha–1). Conclusion: Rice-fish culture was found more remunerative than rice sole culture in terms of net return and benefit cost ratio. Therefore, considering the productivity and profitability, either tilapia or common carp can be integrated with rice following recommended fertilizer application.