I'm sure a Betta could live for a month without food but I would never be so cruel as to make one do so. If I had to leave my Betta for 30 days I would take it to a pet shop or find someone to look after it while I was away.
they can travel 20 to 30 days
water a person can live 30 days with water but only 3 with food.
3 days for water, 30 days for food.
In the summer, they can live for 10-20 days and in the Autumn they can live 30-40 days.
Probably up to 37 days. But it depends on how healthy the fly is or how strong. The longest is about 49 days.
Yes, a human can survive 30 days with just water, but not 30 days just on food. But its very bad for you, so i don't guaranty you trying it...
The average cockroach lives between one and two years after it reaches adulthood under normal conditions. They can live up to thirty days without food and up to fifteen days with no moisture.
30 days exactly.
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Red blood cells live on average about 120 days.
30 days
30 days