Yes until the turtle gets hungry!
yes they can
Yes. My red ear slider turtles love to chase, catch and eat goldfish.
As a rule of thumb, you should not feed your turtle anything bigger than his head. Aquatic or semi aquatic turtles can eat fish. However, if you have them in a tank, even with filtration, it can cause an oily film on the surface of the water.
no
The red ear slider turtles mostly get along fine in groups, there are the occasional turtles that would most definitely like to live alone. They consider other turtles competition for finding a mate.
yes
I buy baby goldfish for my turtles. The ones that they don't catch in about an hour or so, somehow they become friends and never bother them. My leftover goldfish are now the size of Koi.
gago ka
A red ear slider
yes
No, red ear sliders cannot live in salt water. Not only can they not handle the heavy salts, it would very soon be food for some large fish or bird
No, goldfish should only live with goldfish with a few small exceptions that do not include red ear sliders.
The red ear slider terrapin lives up to 50 years