Are you ready to dive into the world of colorful nanofish? These three fascinating freshwater fish species are perfect for any tank. These little swimmers might be small in size, but they're big in personality and color. Get ready to learn all about these amazing aquatic creatures and how to care for them in your underwater oasis!

1. The Peacock Goby | Tateurndina ocellicauda

Native to Papua New Guinea, the Peacock Goby is a vibrant and compact fish, reaching 3 inches in size. Thriving in tanks that are around 72-78 F. It’s best to keep them in tanks that mimictheir natural environment - tannin-stained water using Indian almond leaves, sandy bottoms with driftwood, and a few rounded or flat rocks for them to breed on is ideal.They go best in groups and can be paired with Cardinal tetras or Neons tetras. They prefer a varied diet, including Northfin flakes, live baby brine, and more. Overall, these gobies bring vibrant color and activity, making them an excellent addition to any tank. 

   2. The Bluefin Notho | Nothobranchius rachovii

This small yet captivating freshwater fish originates from Mozambique. The males of this species showcase a remarkable display of colors, with electric blue fins and a striking combination of colors on their bodies. Due to their jumping behavior, these compact killifish are best suited for enclosed aquariums. It's important to note that these fish are accustomed to stagnant water in the wild, so they thrive in environments without strong water flow. Introducing them to a strong flowing tank can exhaust them. 

3. The Gardners Killifish  | Fundulopanchax gardneri clauseni Akure

They’re a stunning species native to Africa, often found in swampy ponds with still or stagnant water. Boasting vibrant colors and a peaceful demeanor, this Killifish is an ideal choice for nano aquariums. Adult males reach around 2 ½ inches, displaying a turquoise-blue body with red spotting, while females are usually brown with minimal red spots. They thrive in well-aged water and are known for their jumping so they require a lid over their tank. While potentially compatible with other tranquil fish and invertebrates, caution is advised to prevent competition for food and ensure the safety of smaller tank mates from predation

In summary, the Peacock Goby, Bluefin Notho, and Gardners Killifish are awesome choices for small aquariums. They're colorful, lively, and easy to care for. By setting up their tanks just right, you can create a happy home for these little swimmers. So why not consider adding one of these cool fish to your aquarium and enjoy watching them brighten up your underwater world?