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This study examined the benefits that are derived from extension workers by fish farmers in Ibadan, Oyo State, Nigeria. Multi-stage sampling technique was used to select a total of 185 catfish farmers from five (5) Local Government Areas in Ibadan metropolis, Oyo State. Data were collected with well-structured questionnaire and analysed using descriptive statistics and multiple regression models. The results revealed that Oyo State Agricultural Development Programmes (OYSADEP) is the dominant source (52.4%) of extension services to fish farmers in the study area. Also, the fish farmers have good knowledge about aquaculture production technologies and were adopting aquaculture production innovation. The Multiple regression estimates revealed that the model 2 has a good fit (R 0.783) and age (-0.049), gender (0.087), educational qualification (0.452) and farming experience (1.032) were significant socio-economic characteristics affecting the benefits they were deriving from extension workers in the study area. The preservation and processing facilities, non-availability/high cost of fish seed, poaching/predators, high cost of fish feed and water shortage during dry season were the constraints facing catfish farmers in Ibadan, Oyo State. Policy interventions for agricultural development should focus on the small-scale fish farmers because they constitute the majority of agricultural production practitioners in the country. Keywords:Perception, Innovations,Extension services, Awareness and Adoption.