Aquaponics is an innovative and sustainable solution of combining the fish and plants culture in a symbiotic recirculating system. this bio-integrated system uses waste from aquaculture to grow plants hydroponically. aquaponics is done with a wide variety of system designs, plant, and aquatic animal species.. 6i hope you enjoyed this article about what is the fish to plant ratio in aquaponics. the fish to plant ratio in aquaponics is roughly 1:2 (one fish:two plants). by having one fish per two plants this should provide for optimum fish production, as well as good plant growth..