First why I choose these. My 10 year old 4.5 Inch Pond Turtle Bites new friends, but she has stop bothering them now because she is unable to hurt them. Rabbit Snail optimal PH is a little higher than my well water. These are a near perfect substitute for my 7.3 PH water. The only down side for me is the mating process produces larger numbers of small babies vs the rabbits snail's single birth of bigger babies.
My snails came in measuring between 1.5 and 2 inches long, and between a 0.5 and 0.75 inch diameter at the largest point. The colors were surprisingly dark on some and pleasantly lighter on others, giving a good spectrum of colors and stripe patterns. Usually at least 1 of the 8 are moving at any given time, and they tend to be more active at night (like most big snails). I put them in a cave when they came in so i can confirm all survived the trip across America because they all left the cave. They seem to prefer my gravel (CaribSea Eco-Complete) to the sand (2mm) area. They love natural rocks as well. I also have Tiger Barbs and have not seen any issues