They dont walk,but some catfish kinda flop around to get to a deeper nearby pond if its a dry season...crabs scuttle arond,but they arnt fish...so fish swim,ya.
jelly fish
it comes out their bums and sits on the seabed/tank floor and decomposes
No. They are too weak to get along and they do not have fins so they can only stay at the seabed.
If you live in The U.S.A. using live fish except for guppies is illegal or at-least where I live. Other than that I really have no idea.
shelly seabed
Most fish can be fed fish food. If not they feed on algi, a bacteria that grows on the seabed and plants or the glass walls and bottom of a fish tank.
Do you mean will they mate with other fish or get along with other fish? They will not mate with other fish, but they will get along without tetras.
International Seabed Authority was created in 1994.
not most swordfish get along with other fish
Wader
by the water...people fish along the water
no because a lion fish is wild