Does your snail have algae on it? Goldfish will eat anything that "grows" in the tank. They will eat turtle droppings, water scumm, algae, anything! That is why they are called bottom feeders.
No, you should only keep goldfish with goldfish (with very few exceptions such as a bristlenose pleco, apple snail or weather loach for example)
Bettas livebearers goldfish cichlids saltwaters
No fancy goldfish should not be housed with the more common varieties of goldfish because common goldfish are more aggressive and can swim faster which in turn would result in competition over food causing the fancy goldfish to become stressed and more susceptible to disease. Also common goldfish may damage the fancy goldfish's delicate fins by nipping at them.This (above) may be true in some cases, but I have a 15' x 8' outdoor pond with 2 fancy goldfish, 2 Sarassa Comets (goldfish) and 2 common goldfish and they all get along fine with each other as well as with my 2 Koi. I watch them eat and everyone gets enough, although the fancies are timid when it comes to getting the food. I wait until the others have eaten alot and throw out more food in their direction. Both my fancies are huge and the biggest I have ever seen anywhere.
I have 2 mud turtles in my backyard pond with a dozen goldfish and small koi. The turtles are too slow to catch the fish but sure wiped out the snail population...
Do Goldfish make good Pets to keep? Yes with the right equipment.
You are describing unusual behaviour for goldfish. Are you sure you have 'Goldfish' as in (Carassius auratus)?
no
Always keep it in water.
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.
The snail relies on the thrush to keep the population of the snail down, and the thrush relies on the snail as a source of food.
grapes and strawberrys
Yes. Separate them.