The first photo, about half way down the article is -
Scientific name - Boraras brigittae; common name - mosquito or chili rasbora. This is a bright red fish, though it will look paler in the shop tank.
The next two photos and descriptions are B. maculatus, then B. merah.
The fourth photo and description is
Scientific name Boraras urophthalmoides, common name exclamation point or sparrow rasbora.
This is an orange fish, and again will look washed out in the shop tank.
The last one is B. micros.
Urophthalmoides have a distinct black blob at the base of the tail and the line down the side should be unbroken. Chilis don't have the distinct black blob. It's usually urophthatmoides which are mis-sold as brigittae rather than the other way round because they can charge more for brigittae (chilis). I bought some "chili rasboras" which were really urophthalmoides, I still have one - the last of a shoal I bought several years ago.