No, this oil press is only suitable for kernels, seeds, seeds, nuts and other dry, oily raw materials (sunflower seeds, sesame seeds, linseed, almonds, chia, hemp, nuts, etc.). This oil press is NOT suitable for pressing soft fruit, fresh greens or meat and fish.
Fish oil is obtained by slightly heating fatty fish or their by-products and then pressing them out.
This method has nothing to do with a seed press like our OP 700.