salt water fish either drink saltwater or get the water it needs through their food. In any case its need for water is mininmal.
Since fish live in water they do not need to drink it as such they simply absorb what is needed.
Well not really, a fish only needs to be able to filter water through it's gills.
Cartilage type fish such as sharks and rays.
Fresh water fish absorb water through their skin and gills. They have to drink because their body's salt is lower than the surrounding water. Therefore, they have to drink huge amounts of water every...
Yes. All animals need water. This includes fish.
How to Set Up a Saltwater Aquarium
How to Set Up a Saltwater Fish Tank
Saltwater Fish Tank - Trouble Shooting
Saltwater Fish Tank - Selecting Live Animals