A couple qs on fish

Question
Hi, I am doing some research on beta fish. If you cn have these questions answered by Sunday the 6th of February that would be awesome. Here are the questions I need answered:
How long do beta fish live?
How often do you need to clean the tank of a beta fish?
What is the usual environment for a beta fish?
Why are there bubbles at the waters surface?

Answer
Hi again,

For your qustions:

1. their life span is about 5 years

2. You need to clean their tank every week

3. A plant two rocks and de clorinated water

4. When their is air in the water the air risises to the top and forms a bubble.



At your becncall Logan