no usally in freshwater lakes or ponds that have running water or stocked in the pond or lake
freshwater and saltwater
Freshwater
Unagi (うなぎ) is freshwater eel. Anago (穴子, or アナゴ) is saltwater eel.
Depending on the type of eel, yes.
because saltwater fish must be live in saltwater
Saltwater fish live in the saltwater seas and oceans around the world.
Angelfish live in saltwater
yes, they do need saltwater to live.
to siphon you wont need to put your hands in.
Yes, corals live exclusively in saltwater.
Saltwater
where do eel live