[DaveK]

The live plants help a lot. I think I'd get rid of the red gravel also. It looks very artificial, and detracts from the beta. I think a dark tan or brown or even black gravel would show off the fish a lot more.

Also, since you have all of 3 gal, you could consider an additional fish or two. Naturally, you don't want to add another beta, but a cory or two might work out well. Betas don't really like to feed from the bottom. Note the upturned mouth.