Comment Re:And (Score 1) 262
What you want is a closed loop. For hydroponic gardens, which is what you'd be using in space, tilapia are an excellent source of both protein and fertilizer. That's why tilapia are so often used in aquaculture - in an environment like a rice paddy, they are part of a symbiotic relationship.
Plus, it's a lot tastier than reconstituted soy mush.