Received a dozen Pygmy Cories 2 weeks ago. I had them sent Priority Overnight, as I do all my orders and they arrived in excellent condition. I drip acclimated them( I prefer this over the instructions that come with them) and they did very well right off the bat. After keeping the light off overnight when I turned it on they were already out and about, resting on plant leaves and swimming around with my Ember Tetras. They are tank raised, my preference, and not shy in the least. I couldn’t be happier with how they are doing. Two weeks later and no losses. They are a nice size and extremely healthy.
Got 8 three weeks ago. They were about half the size of the existing Emerald Dwarf Rasboras in my aquarium. Most stayed pale for a week or so but all have colored up just the same as the existing adults. All survived transit and are still doing well.