Can apple snails get stunted?

Question

if kept in an aquarium too small for them

but still large enough for them to grow full size

i would never do this

Answer 1

In general you should have at least 2.5 gallons (around 10 litres) for each snail.  I'm glad you have given up the idea of keeping them in a breeding trap....haven't you?

Please check out a couple of websites to ensure you are providing optimum conditions for your apple snail/s, providing you want to keep them otherwise it may be better for your snail and plants to find a suitable home for them :)