GUPPIES
If you want to have guppies you should change the water as often as
possible. If you change 10% of the water every day, it's what guppies
need. 
You should feed guppies live food, brine shrimp is best, but dry
food, would be good enough if you feed your guppies live food at least
once a month. Feed your guppies two to three times a day. The more often
you can feed them, the better they will grow. But never feed
them for more than 5 minutes. Nine out of ten fish die not from
because you don't feed them enough, but from overfeeding. 
You should light the aquarium at least 12 hours a
day (more light makes guppies grow faster).
Click on any of these guppies to find out more about them.