How Long Do Fish Take To Asphyxiation?

How Long Do Fish Take To Asphyxiation? One Dutch study found that it took 55–250 minutes for various species of fish to become insensible during asphyxiation. Fish that evolved for low-oxygen environments take longer to die. At higher temperatures, fish lose consciousness more quickly. Do fish suffocate when caught? This is why fishing, including catch-and-release