Well I'm not sure but the fish would probably be less active because the circulation wouldn't be as good in an open circulatory system so it wouldn't be able to retrieve as much oxygen for its energy level and it would need to slow down.
eating other fishs
They blow air bubbles which may mean a sign of lack of air or they may be pregnant and are making a nest for the eggs.
Fish breeding seasons vary depending on the species. Generally, many fish species breed during the spring and summer when water temperatures are warmer. Some fish may have specific cues from the environment, such as rainfall or water level changes, that trigger breeding behavior.
Predators of X-ray fish include larger fish, birds, and mammals that prey on smaller fish in their habitat. These predators rely on their keen senses to detect and capture X-ray fish as a source of food.
Depends, If the hook goes down the throat into the belly the fish is as good as dead. If the hook is in the hard tissues around the opening of the mouth there is a very good chance he will shake it free.
fishs eddy
I don't think so. I know the fish may change it's own color. And that there is color-enhanseing food.
NO
deers or fishs
bass, bream,
The Indian & Pacific Oceans .
chalk goby
His fish are named Brock and Swimmy
Gills
what do fish eat
Increases the fish's volume by filling the swim bladder with oxygen.
dams cause many fishs' life cycle