to see how good they can swim
No, duckweed does not depend on snails, nor do snails depend upon duckweed. Snails can eat a wide variety of vegetation. Duckweed does not benefit by being eaten.
No.
Snails depend on Hydrillas for food and oxygen while Hydrillas depend on snails for carbon dioxide
well it depends on what kind of fish it is and what kind of snails it is
6/10 = 3/5
Can outdoor snails eat fish food flakes
Freshwater snails will certainly eat dead fish, as will a variety of marine snails. There are predatory snails called cone snails that live in the pacific that hunt, kill and eat fish like any other type of predator. They have a type of venemous harpoon that they are able to launch into fish. This paralyses the fish instantly and then the snail eats it.
on my opinion fish do yes in deed eat snails but not all fish
Yes snails can live in a fish tank, and they can breed.
In the aquarium were water, weed, sunfish, snails, and a neon fish.
No.
It is unlikely the snails will eat swimming fish fry although they will sometimes eat ova (eggs) that are attached to plant life. Apple snails are vegetarian.