Cryptocoryne Wenditii

Yesterday I introduced four new things to my tank...
6 Celestial pearl danios, 6 ember tetra,  half a handful of snails which I believe to be Malaysian trumpet snails, and a Cryptocoryne wenditii.

On getting the plant out of its pot I noticed it's very like a peace Lilly, so separated it out into lots of plants, some tiny some slightly bigger. Then I planted it where I wanted it to go.

I've noticed some holes appearing in some of the leaves, and some broken stems that were not broken when I planted in the substrate.

My first thought was the snails, the MTS to be precise.  But everything I read says they don't eat plants, or only when there's not enough else to feed them.
Then I thought maybe the plant is just irresistible to the ramshorns and bladder snails I've had in the tank for weeks and that haven't eaten any of my other plants.
Or perhaps some of the fish!??

Anyway I did some reading and found crypts suffer from crypt rot when they are moved.  Could what looks to me like a munch hole made by a snail, actually be this?
I really hope so as I understand they recover and grow back in time.

I'm not at all sure Colin, I only have the lfs word for it. It was labelled as a crypt.
It's been a while since I kept Seagrass peace lilies, or any house plant for that matter. The roots were the same, ie really easy to split apart from each other. I can't remember what the peace lily leaves are like off the top of my head.

That looks like a Crypt to me.

So they've been in since mid June, 2.5 months.

Crypts are well known for doing this. The general consensus seems to be to leave them be and they'll put up new growth.

Patience you must.

I wouldn't have thought that adding more fish would be detrimental to your plants (unless they're actively eating them). It's normally the other way around as the fish provide your natural ferts.

I've found with few different plants that the original (i.e. what I bought) started to deteriorate after a while but was superseded by the new growth which then flourishes - almost as if the plant adapts to your tank through the new growth. Might be nonsense, but this is what seems to have happened with a few of mine, particularly Java Fern. Perhaps this is why your youngest plants seem unaffected?

Personally, I prefer to lop off any leaves/stems which appear to be dying off so as to encourage more new growth but I know others prefer to just leave the plants to do their own thing.