Boraras urophthalmoides

The Least Rasbora, often called the Exclamation Point or Sparrow Rasbora, is a tiny and vibrant fish perfect for small aquariums, known as 'nano tanks'. Its nickname comes from the distinct black spot at the base of its tail and a short body stripe, which together look like an exclamation mark (!). These are peaceful, active fish that feel safest and show their best colors in groups, so you should always keep a small school of them. They enjoy exploring the upper parts of the tank. Their small size means they won't make the tank very dirty, which is great for maintaining clean water. For feeding, they happily eat high-quality crushed flakes, micro pellets, and enjoy occasional treats of small live or frozen foods like daphnia or baby brine shrimp. Because they are active swimmers and can sometimes jump, a lid on the aquarium is a good idea. They are a wonderful choice for anyone looking to create a lively, miniature aquatic world. Their peaceful nature means they get along with other tiny, gentle tank mates like small shrimp. They prefer a planted tank with gentle water movement, which mimics their natural home and gives them places to feel secure.