Golden Mystery Snails, about 1/2″ in size. They grow bigger faster in warmer conditions. I’ve found this out by keeping several tanks with different temperatures. The ones in the 70 F tank are the biggest. These snails are the result of a cross between a Golden female named “Gary” and a Violet male named “Romeo”. The other color variations they produced are Ivory, Brown, Black, Dark Purple, Light Purple with stripes, and Light Blue.