Do fish ever get thirsty?

Do fish ever get thirsty?

I was asked this question by my ever inquisitive seven year old. The same child who recently wanted to know about travelling at the speed of light and whether pigs dream; I’m always curious to see what his next big question is.

It’s a good question, fish live it water, they have it around them all their lives, but do they ever get that strong urge to drink, that urge we call thirst, or do they even drink at all? Read more