Fish - What Can We Eat? We are forever being told to eat more fish, but which species or stocks can we cook with a clear conscience? What should we look for when we buy our fish? Gerard Baker visits Scarborough fish market in his search for delicious, plentiful "ethically caught fish and attempts to convince customers at the local chip shop that it's not cod they want, but coley. Producer Tamsin Hughes Repeated tomorrow at 4pm