No mess no stress? More like no mess but stress on that poor fish! Yikes... The parameters in there are gonna spike up. Yesterday I made a trip to petland. I don't usually go there but I had to cause the LFS I usually go to was a bit farther away. I went there to buy pimafix and melafix, accidentally wandered over to the fish section, and found a tiny tank similar to the picture you provided, but in a different color and stuff, a poor adorable little red betta in there! The tank was disgusting! Talk about no mess! The betta was lethargic and ill. They said a "betta kit", sold for $48.69! That for such a price! Beside it was a slightly larger and prettier tank, no bigger than 1.5 gallons im assuming. With a light and filter system and plants. That mad me a bit happier until I realized the size and the adorable red crowntail. He was laying directly touching the intake of the pump. It was a filter where there was a back department and had slits cut for intake, not an actual removable filter. He didn't look sick, but he just leaned there. Idk if he was stuck? But didn't seem excited when a person came over...poor animals! ANOTHER BIG YIKES!