QR Code Link to This Post I have young 1/2" to 1" Marisa cornuarietis commonly called the Giant or Columbian Ramshorn snails for adoption. They are a great addition to your freshwater tank to help clean up left over food, and their brown and yellow shells make them an attractive addition to your tank. Currently eating flake food, algae wafers, and romaine lettuce. This snail is a relative of the apple snail and are not like the typical ramshorn snails which overpopulate your tank. They will reproduce with a gel sack which can easily be removed if you want to control the population. They can grow to over 2" in size. Asking a $2.00 adoption fee per snail or 6 of them for $10.00.