How much water does a fish actually need to survive? And how long can they survive on the bare minimum?

Question

I saw a person selling goldfish in this hot summer in New Delhi, and it got me intrigued about fish and marine life, like can they see the water they are living in? If I take them out of the water and keep splashing water on them will they survive?

In: 34

Answer 1

Fish “breathe” by moving water across their gills, either through swimming or by sitting in a current. If that movement stops, they start to suffocate. How long they can survive depends on the fish, but goldfish can’t survive long. You would have to run water across the fish’s gills repeatedly every few seconds in order to keep it alive.