, Or even the Siamese preventing fish is the most popular. These amazing very little tropical fish are perfect for smaller aquariums, and you will find them in pretty much any pet store. There are a few that you most likely hardly ever even heard about, let alone understood existed; https://fishtankcleaner.art.blog/2024/10/18/how-to-maintain-a-2-feet-aquarium-bigger-fish-tanks/