You can look at forums and information on sites like:
http://www.fishlore.com/Tips-Betta.htm
you shouldn't just "throw away" a pet when it can be simple things that cause this
I have personally had fish that had those symptoms and were fine in the long run !
You should take the fish out of your tank and dispose of it because it is dead. In this case it may be also ill so take it to the vet or call them up.
Its Dead. When it floats up and the gills are not moving and breathing for sure it is dead
if theres are other fish in the tank with him then his tail is getting eatin by the other fish and u need to get him out now. or he might just have fin rot.
If there is other fish in the tank he doesn't like them or he could have air in his body which floats him to the top and they can die from that .
its dead.. Sorry, but I think your fish is dead! :(
the cause might be a sick fish, a dirty tank, or over feeding.
Dead or dying
They want feeding.
to eat food
food flaots
opline gourami, guppies ,hatchet fish
Some fish prefer swimming at the top of the tank while others the bottom or middle.
Could be anywhere.