The crown tail fish is one of the most popular small freshwater species in the US for one main reason: their beautiful caudal fins. Crown tail are one of the most common species of betta fish and are colloquially referred to simply as bettas, or their behavioural name, Siamese fighting fish. They are known for their aggressive nature and specific fin characteristics; especially their huge caudal fin. The Crown tail Betta, despite only being 20 years old as a species, earned its famous name due to its vibrant tail fin. Their caudal fin has large extensions and can sometimes be 8 inches in diameter What’s also impressive, is the significantly reduced webbing between the Crown tail's rays on their caudal fin; giving a crown like appearance. This crown like appearance comes from the Crown tail's spiky separate tips on their fins.
