Your Betta fish most likely has a condition called Pop-eye. It commonly results from damage to the eye or bacterial infection. Heres a website to get you started... http://www.fishjunkies.com/Diseases/popeye.php
It means he hates you. Bettas flare their gills out when they're trying to scare another betta away, or to impress a female with how large he is.
Female beta is a murderer.
Male betta's are more colorful then female's
From a female Betta. Then the male Betta fertilizes them when they breed together.
Your betta fish is a female if she has smaller fins than an average male.
If they are not too old and the female is ready, then they will mate.
She breeds with a male Betta Fish.
it depends i have a male with a female betta, in a 2.5 gallon tank,they get along, i wouldnt risk it, no
the female betta fish are released from a vent while a male embraces her
If you would like to know what gender your betta is, look for the egg spot. (for females) It should be a small white cloud between the head and body. If your betta has one, it's a female. If your betta doesn't have one, it's a male.
Np, but they will bite. Yes, they will fight to the death.
betta fry are not born .they hatch from eggs laid by the female which the male fertilizes.