Ghost Shrimp ( Palaemonetes)

In Malaysia, you can get more than 30 Ghost Shrimp (Palaemonetes) for RM2. Usually these shrimps been sold as a source food for Arowanas. I've been keeping ghost shrimp for quite sometime, and the longest time they can live was about almost 2 years. Here is a little bit info about Ghost Shrimp:
  

Ghost Shrimp, also known as Glass Shrimp, are excellent scavengers. They are inexpensive and efficient aquarium cleaners that will actively search for any kind of left over food in your aquarium. Their transparent bodies and frenetic food-searching behavior make Ghost Shrimp an interesting addition to your freshwater aquarium.

Pregnant Ghost Shrimp (Palaemonetes)

The Ghost Shrimp body is transparent, and an orange to yellow colored spot is visible in the center of the tail. The body is segmented, and features ten sets of legs. The first four sets have tiny claws that aid the shrimp in feeding. Ghost Shrimp are relatively small invertebrates, reaching a maximum size of only 2".

 

An established freshwater aquarium of at least 10 gallons with plenty of hiding places and a mature substrate are the ideal setup for the Ghost Shrimp. It should be housed with small peaceful fish that will not pose a threat of eating these shrimp.

 

Ghost shrimp will readily breed in the aquarium if kept in large enough groups. The female carries the eggs, which appear as small green dots under the tail. If interested in raising the shrimp, remove the female to a different aquarium until the shrimp hatch. At that point, return the female back to the main aquarium and feed the baby shrimp newly hatched brine shrimp, rotifers, or a suitable liquid food. 

Source: Liveaquaria