Give it a good home, feed it, and change its water
Do Goldfish make good Pets to keep? Yes with the right equipment.
Goldfish have a big red eyes because it could be do to its condition or because it could be getting sick also poor hygiene and no proper care so observe and keep it healthy
You are describing unusual behaviour for goldfish. Are you sure you have 'Goldfish' as in (Carassius auratus)?
You obviously can but it is not the correct food so it will not do the right job. Manufacturers have spent millions of dollars designing and producing special foods for different species of fish to keep them as healthy as possible. The smart thing would be to feed goldfish food to goldfish and cichlid food to cichlids.
The cheapest way to keep a goldfish is to keep it in a fish bowl.........as long as the bowl is big enough the fish will be happy there.
yes, goldfish love duckweed! I wouldn't make it their primary food, but its a good snack, and healthy for them. It's a good supplement to high quality goldfish food.
it will live
Yes. Separate them.
Rule of thumb is to not mix tropical fish and goldfish.
A goldfish can live in an opaque glass tank as long as you keep up with necessary water changes. Like a small outside garden pond goldfish are only viewed from the top.
Most people would keep goldfish in a bowl or tank, filled with water. You can always add scenery such as pebbles plants and castles :D
Goldfish are pretty easy to keep.