Betta's live for over 5 years, so they are far from senile.
To keep them happy and alive - keep them in clean water, in enough space to allow for some plants and swimming room, and do not overfeed them or their containers. They thrive best in heated water of about 78 degrees, and like all fish will also thrive best in a filtered and aerated tank.
To breed them you should get yourself a book and scour the internet for ideas, you won't learn much from a simple yahoo post.
To keep them happy and alive - keep them in clean water, in enough space to allow for some plants and swimming room, and do not overfeed them or their containers. They thrive best in heated water of about 78 degrees, and like all fish will also thrive best in a filtered and aerated tank.
To breed them you should get yourself a book and scour the internet for ideas, you won't learn much from a simple yahoo post.