![]() This gorgeous freshwater fish can reach a size of about 2.5 to 3 inches (6.3 cm) in the wild. This fish has a series of vertical lines of red and neon blue along its entire body, but what is most striking is the series of vibrant yellow lines that surround its fins. The Peacock Gudgeon is actually the only member of the genus Tateurndina and it’s native to Papua New Guinea. Peacock Gudgeon – Tateurndina ocellicauda ![]() In case you’re a total beginner, check out this post first to learn more about what you’ll need for a freshwater fish tank.Īnyways, here are the finest freshwater fish for a 20-gallon aquarium: 1. In this post, I’m going to list some of the best fish species you can have in a tank of these dimensions. At the same time, you can build a beautiful aquarium with a good variety of fish and decorative elements. The 12 Best Freshwater Fish for a Bustling 20-Gallon TankĪ 20-gallon tank is probably the best option for novice fish keepers and intermediate hobbyists, as you can place it almost anywhere in your home or office. With that being said, it’s time to plunge in and see the best species of freshwater fish for a 20-gallon tank. Small fish species like rasboras and tetras are usually the most popular choices, but there are some bigger ones that are also an option.Įven though I’m not a huge fan of the latter, I decided to include them in this list as some of you might find them to be good centerpiece specimens. Regardless, there are still plenty of stocking ideas for those of us with a 20-gallon aquarium. ![]() ![]() The species and number of freshwater fish that you can keep as a community in your new 20-gallon tank are limited. The popular saying, “size doesn’t matter” may sound appealing to some, but it certainly doesn’t hold any truth when it comes to aquarium sizes. ![]()
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