That depends on koi size and Slider size.To ensure koi safety make sure they have a size advantage over the slider and both can have their own home to live in.A large enclosure will be needed its recemmended you put there habitat outside.If it is outside, put a small fence around the pond there in so the slider cant escape.If you see hes happy and healthy you can have no worrys and he will live a good life.If he shows signs like a dirty shell or puffy eyes, Go look at a local pet store for something to help him.If theres no products to help him, see a vet.
no they eat them
Sure, they do it in the wild. If you have pet red eared sliders and geese then as long as the geese don't pick on the the turtles you will be fine.
No, red-eared sliders are not illegal in England.
yes, mini red eared sliders do exist
they can live witha lo9t of things
Yes, red eared sliders eat minnows in the wild and in captivity.
never
no
no
yes they can be separated because by nature, red eared sliders are solitary creatures.
in captivity 20 to 40 years with great care
yes there se turtles HAHAHAHA