Fish are broadly divided into two categories based on the salinity of the water in which they live. Freshwater fish live in rivers, lakes, and streams where the salt concentration is very low. Saltwater (marine) fish live in the oceans and seas where salt concentration is high. Some fish are anadromous - Like salmon - And can live in both environments at different stages of their life cycle. The physiological differences between freshwater and saltwater fish are significant, as each must manage water and salt balance differently through a process called osmoregulation. In this sortable quiz, you'll classify well-known fish species as either freshwater or saltwater. Perfect for fishing enthusiasts, marine biology students, and aquarium hobbyists.
Unsorted items will count as wrong.