Aquaculture plays a prominent role for the satisfaction of current and future human dietary needs. According to FAO, by 2025 the share of aquaculture on the total world fishery production will grow by 8%-points, form 44& to 52%, reaching the level of about 100 million tons. Achieving this production level depends on a series of factors such as availability and accessibility of good production locations, sufficient investments in infrastructures, capital availability, and availability of fish feed in the required quality and quantities. With regard to fish feed, a substitution effect between traditional fish meal/oil and vegetable meal/oil can be observed. When looking at specific terrestrial plant ingredients such as e.g. soy or maize, it has to be noted that these feed ingredients partly originate from areas rich in biodiversity and carbon stock, often connected to deforestation or grassland conversion. This article focuses on the impacts of terrestrial plant ingredients production for aquaculture feed and provides insights into solutions that certification schemes like ISCC (International Sustainability and Carbon Certification) are able to offer for the implementation of deforestation-free and sustainable feed supply chains.