Snails are not fish. They are a different type of aquatic creature known as gastropods.
Birds
an otter, cat fish and a dog fish
In water where soil, algae and fish are bundant
Aquatic snails breathe through a gill. Very similar to how a fish breathes. Terrestrial snails have a lung and breathe like you or I.
Aquatic snails (as opposed to land snails) and fish live entirely in water - either fresh or salt, depending on their nature.
Reproduction by a previously existing life form or life forms. With regards to many aquatic snails, which are hermaphroditic, it only takes one. or an egg.
No. Only aquatic snails can live in water. It is not adviseable to add any snails to an aquarium IMO anyway.
Dolphin, fish, shark, whale, turtle, etc. Aquatic is derived from aqua, as in water. So just think of animals that live in the water.
No, not all aquatic herbivores are fish. Aquatic herbivores can include mammals like manatees and dugongs, as well as invertebrates like sea urchins and snails. These animals play important roles in maintaining the health of aquatic ecosystems by consuming plant material.
Most aquatic snails eat either plant matter, or are scavengers. However, there are some venemous predatory snails called cone snails in the South Pacific that are highly predatory on fish; they have a poison tipped harpoon that they can launch at fish and paralyse them. There are other types of carnivorous snails as well that prey on shellfish.
There are many different species of snails and they all eat different things. Some snails eat garden plants and some snails, such as sea snails eat plankton and fish.
Live snails for your fish tank can be purchased at pet stores, aquarium supply stores, or online retailers that specialize in aquatic pets and supplies. Be sure to research the specific type of snail you want to ensure it is compatible with your fish tank environment.