This study was conducted on 100 Fish Farmers of Nazeemabad village of Udham Singh Nagar District of Uttarakhand. Need was assessed through survey schedule. On the basis of need assessment, an online lecture was delivered. After that knowledge was assessed. It was reported that majority of fish farmers were unaware about techniques for checking phytoplankton and zooplankton, weed management in pond, Irrigation and drainage management, pH and Oxygen level measurement, ways of diseases control. Majority of respondents (98 per cent) were facing many constraints as productivity of soils of the pond, Lack of adequate marketing channels, Lack of proper training/exposure visits and lack of adequate marketing channels. An online video lecture was delivered by fisheries expert. It was observed that knowledge was increased after listening a lecture.