The fish is pooping.
It is probably poo. Clear poo in goldfish usually indicates intestinal parasites. Start the fish on a cycle of anti-parasitic medicated food.
Koi
You could go by the golden rule. If to all intents and purposes it looks and behaves like a goldfish, in all probability it is a goldfish. Goldfish come in very many different shapes, sizes and colours.
Yea yea yea whatever!!
a golden fish. that's about the simplest explaination.
Alfalfa
What dose it mean when a male goldfish has Lumps on it's body and it head
Goldfish do not get pregnant. They are egg layers. A female goldfish looks a bit chubbier than normal around the tummy when she is in breeding condition.
a piano.
it has a string so that when you play with it the string pulls it away. so like if you have the string in your pocket and you make it go around your hand it looks like its a real worm
That is the fishes droppings from the bottom.
Possibly peas