I love this thing. My daughter won 2 fish at the fall festival and put the small fish tank she got in on a high shelf. The next day the fish was gone and my cat appeared in court and did not answer questions about the disappearance. This bowl is perfect because you can eat the fish without making it a snack for your cat as there is no way for her to get at it. I bought the 1 gallon male betta size. I know people mentioned paper on the back but it peels off and you can leave it transparent so you can see the wall or add aquarium paper or any other decorated paper. I took aquarium paper from the pet store, circled it, trimmed it, and just secured it with invisible tape. I put some aquarium rocks on the bottom and a rock for him to swim through or just dangle through which is great. I'd suggest taking your bowl to the store to make sure any rocks or plants are right for you, especially if you're making a half-gallon, just to make things easier for you. To change his water, I scoop some of the water already in the bowl, scoop it out with a net, and put it in the waiting water. Then you can simply remove the bowl from the wall and replace the water. I had no issues with this bowl and it hangs securely on the wall.
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