It's the devil (fish) himself! This red crown tail betta fish is just splendid! Well, it's not as nasty as it looks. It has a rather calm movement. When we face him to another betta fish (in another aquarium, of course), it opens its fin and tail as wide as it can get (see the picture) and just stop moving, only to stare to its enemy. Will he win if we put him into a fight with another betta? We don't know. Curious, but we won't let the curiousity destroy our lovely fishes.

In my country, we call this crown tail betta as "Serit", meaning a comb. Yeah, when you people from the west think that its fins and tail look like a crown, we think it looks like a comb.