We guarantee our fish for 5-days from the first delivery attempt. Delivery must be made on first attempt or 5-Day Fish Guarantee is void. Only Fish are Eligible For 5 Day Fish Guarantee with Priority Express Shipping with Signature Required. 5 Day Fish Guarantee does not include Shrimp or Snails. See Live Arrival Guarantee.In the event that any of your new fish don't make it, you must email us 2 clear images of the fish.