Bettas: The badass underwater ninjas.

When I was in fourth grade, I had a bigass goldfish in a bowl with a beta. The goldfish was like the size of a smallmouth bass. And the beta was just sitting there practicing his flip out face in the mirror I put in the bowl. The goldfish came up to the beta, and it was like "Hey, I got a big turd hanging from my ass. It's touching the rocks on the bottom." The beta said that's bullshit man, and the goldfish bit the beta on the tail. The beta was like "Yeah right motherfucker, that's nothing. Check this out." And the beta flipped out and put on his ninja suit he hides behind his gills. A guitar started bubblewailing through the water, and the beta started going insane. It spun the water so hard that the goldfish screamed as a big line of poop shot out of the bowl and wrapped around the ceiling fan. It pulled the goldfish out and because the beta was so badass, the shit string held the goldfish until the beta was ready. It let him go and he flew into the other fan sitting on the floor. And the beta was still pumped, so the guitar started bubble wailing the suspense deal, and the beta started eating gravel from the bottom of the bowl, and swimming around superfast. He swam in a circle and the water spun in a whirlpool, and he spun and spun, and he spun so hard I crapped my pants and the crap came out of my pants and got sucked into the whirlpool, and it went so fast it turned into a little black hole, and the beta/ninja saved the world from a black hole by committing seppukku and being so badass by plugging the black hole.

Bettas spend a lot of time doing things that ninjas do, like stabbing, but they don't fly. Not that they can't, they just don't. But watch out, because if you piss a betta off and give it the wrong fish food, it'll flip out and finslap yop.