Do fish drink water? Do they ever get thirsty? I know many people think they drink all the time because they live in water but in real sense, they don’t they are as teetotaler as old Shilaho. Read on to discover why.
Do fish ever get thirsty?
Do fish drink a lot? Do they take water all the time? Do they ever get thirsty? I am one of those who have used the expression drinking like a fish but in real sense, fish are teetotalers and do not drink, in fact drinking would be dangerous for a fish! To put it more clearly, there are people who work in cigarette factories without smoking and some who work in breweries but don’t drink alcohol!
Fresh water fish have hypertonic blood compared to their surrounding
Body fluid in fresh water fishes is hypertonic compared to its surrounding making them absorb water through their body surfaces as opposed to drinking like humans do. Instead of taking water to quench non existent thirst, their cells are always hydrated and therefore causing no need for active water intake.
Do they need water?
Of course they do. They stay in water which not only helps in their movement but also ensures that they breathe. Fish open their mouths to let water glide over their gills and out again. As water moves over the gills, their respiratory surfaces, and out through the other side, there is interchange of gases where oxygen enters the capillaries in the gills while carbon dioxide gets out into the water.
Fish are teetotalers!
Water requirements for fishes are therefore sufficiently met by passive intake through body surfaces such as the skin and the gills and through the food they take which is many a times overhydrated already, making drinking unnecessary. Fish do not therefore drink and neither do they have to drink for if they did, they would die!
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