Final answer:
Ench fish can be found in oceans and seas, but not in rivers or lakes due to their inability to survive high salt concentrations.
Step-by-step explanation:
There are two areas where ench fish can be found, and those are oceans and seas. These fish cannot survive salt concentrations beyond 1%, so they require marine or saltwater habitats to thrive. They are not commonly found in rivers or lakes as these bodies of water typically have lower salt content.
Learn more about habitat of ench fish