Sustainable development has now been widely adopted as main development paradigm since late 1980s, including the management of natural resources such as fisheries and livestock. This development paradigm must also be adopted by East Nusa Tenggara Province when managing its fisheries and livestock resources as well as other economic sectors. Within national development framework of economic development acceleration, known as MP3EI, East Nusa Tenggara, along with Bali and West Nusa Tenggara is part the fifth corridor of MP3EI which main priority of developing fisheries, husbandry and tourism sectors. This paper aims to provide a review of developing fisheries and husbandry sector in East Nusa Tenggara based on sustainable development principles. Base on this principle and MP3EI framework, this research aims to (1) determine the effect of the non-fisheries diversification for income of peasant-fisher in Rote, and (2) determine the productivity of each non fishing effort. This research was conducted using survey method by means of interviews and focus discussion group, experiments and participant observation. The results showed that diversification through nonfishery resources can increase the average income of the peasant-fisher, each fisheries effort (FE) 3,730,000 IDR; FE + weaving effort (WE) 6,780,000 IDR; FE + chicken livestock (CL) 4,774,375 IDR; FE + pig livestock (PL) 6,170,000 IDR; FE + WE + CL + PL 10,264,375 IDR. The measurement results on the productivity of non-fishery enterprises obtained the average production (IDR/ month) respectively weaving effort (WE) 3,050,000 IDR; chicken livestock (CL) 1,044,375 IDR and pig livestock (PL) 2,440,000 IDR. Based on the research results, it can be concluding that the development of non-fishery diversification can increase the income of the peasant-fisher. Therefore, it can be recommended that effort to increase income of peasantfisher could be done through the development of non-fishery enterprises.