What are a zebra del and a pinkie? Do you mean Zebra danio?
The tank needs to be heated and filtered. Also, it needs to be at least 5 gallons, better yet 10 because of the tankmates you have. A 1.5G will hold nothing but a handful of shrimp.
Your tank also failed to cycle, but a 1.5G unfiltered tank will never do that.
Here is a great post about cycling. It is the second post.
In order to fix this, you need to upgrade your tank a provide proper care.