| | Re: What is wrong with my plant?
Until that plant gets several weeks in an aquarium the holes are likely to be mostly physical damage. A small bruise will kill the plant cells and cause a small hole when the dead spots fall off. Once it is growing in the aquarium any damage from the fish or snails can lead to more holes, but the new leaves should be free of any holes or other damage. I wouldn't worry about the holes for now.