25 to 30 Japanese Trapdoor Snails 1/2" to 1" + Java Moss These Are live bearing Snails One Of The Largest Of FreshWater Snails Will consume Algae and dead plant matter. Snail Size: 3/4 inch Shipped With A Max Size Of Nearly 2 Inches when fully grown. These snails are live bearing snails currently giving out baby snails. Tough Snail Species, Pond Qualified, Japanese Trapdoor Will Survive Freeze Over.