Which is the largest and smallest in ornamental shrimp?

There are many kinds of ornamental shrimp, and everyone has a different viewing angle. I am interested in getting an Australian lobster if I can.

It tastes like someone keeps turtles and whales.

I know the biggest shrimp in an ordinary family aquarium.

Seawater: clean shrimp. Shrimp can grow to 6-7 cm, regardless of length.

Freshwater: The average size of crayfish is 1 1- 12 cm, and it is said that the maximum length of crayfish is 28 cm, which is unprecedented.

The smallest shrimp that can enter an ordinary family aquarium.

Freshwater: cherry shrimp, fire shrimp and crystal shrimp are not around 1 cm on average.

But recently I saw a spider crab in Thailand, which is very small, only about 1cm. It is very cute.

I hope you are satisfied with my answer! :)