So I was at the gardening store earlier today and asked about duckweed, the lady looked horrified and confused that I actually WANTED duckweed. She said they couldn't sell it to me but she could give me some. She disappeared behind a fence and came back with a snaplock bag full of this

I've never seen duckweed that looks like this (most of what I've seen is tiny green dots) and I can't find anything online about what it could be. Does anyone know what it is, and if its safe for my goldfish? I originally got it for them to eat (I hear they love it) but don't want them to eat it if its guna make them sick. I'm just guna put it in a container of tank water and sit it outside until I know what it is.
Also sorry about the really bad photos, I've only got my phone camera and my hands are shakey. Thanks in advance for any help.

I've never seen duckweed that looks like this (most of what I've seen is tiny green dots) and I can't find anything online about what it could be. Does anyone know what it is, and if its safe for my goldfish? I originally got it for them to eat (I hear they love it) but don't want them to eat it if its guna make them sick. I'm just guna put it in a container of tank water and sit it outside until I know what it is.
Also sorry about the really bad photos, I've only got my phone camera and my hands are shakey. Thanks in advance for any help.
