He might be getting old. If he is paler and less active, than he is sick, old, or unhealthy.
He's probably unhealthy.
Male Bettas have more colour, are larger fish and have much larger fins than the females.
The male of the species is considerably larger, has much larger fins and is much brighter in colour than the female.
it will of changed its colour
This is the LAST thing you want to do! Putting a male betta fish in with another male is horrible because male bettas will fight to the death...not good!
Male betta's are more colorful then female's
From a female Betta. Then the male Betta fertilizes them when they breed together.
male
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
Some male betta fish are not as aggressive as others.
You should not put a male betta with goldfish's.They are aggressive and will fight with goldfish's goldfish give off ammonia and will kill the Betta's.