Of course! natural predator,prey response.
Starfish live in saltwater, on rocks or reefs
no its not okay
Certain freshwater fish can survive saltwater conditions; examples are black mollies, mono's and scats. All of these fish aren't truly freshwater or saltwater, they are Brackish. Brackish is between freshwater and saltwater, and so these fish are highly adaptable.
because saltwater fish must be live in saltwater
No
salmon
saltwater
They are Saltwater fish.
The same as in the ocean
Saltwater fish are hypoosmotic.
Saltwater fish live in the saltwater seas and oceans around the world.
Normal rocks are not healthy for gold fish. Although you can use them as long as you clean the rocks before you put them in your fish tank. There are lots of harmful things on rocks that can get your fish really sick, if you have expensive fish your best bet is to use the rocks that you get from your local fish store. I had some of the same type of fish you had and i did not listen to someone telling me the same thing I'm telling you and all of my fish died i would not want the same thing happening to you. I wish you luck on your fish tank