Betta fish are hailed as the "peak of beauty" in the world of ornamental fish, thanks to their vibrant colors and flowing fins. Here's a roundup of various rare species and their distinctive beauty:

Stunning Varieties Among Thai Bettas
Halfmoon Betta: With tail fins that spread 180 degrees like a full moon, they display a silky, gradient metallic hue (red/blue/purple/white) when swimming, earning them the title of "underwater gems".
Crown Tail Betta: Their spiky tail fins resemble a lion's mane. The deep blue and red tones, combined with the three-dimensional structure, make rare varieties like the four-pronged and Y-pronged ones even more majestic.
Double Tail Betta: A genetic mutation results in symmetrical double tail fins. The scales of the sapphire variety reflect light like ink spreading, and the tail fins often feature turquoise patterns.
Beauty Icons of Chinese Bettas
Macropodus opercularis (Common Paradise Fish): Adorned with alternating red and blue vertical stripes and moving with an elf-like grace, they boast both wild beauty and robust health, widely recognized as the representative of native bettas.
Vietnamese Black Paradise Fish: It has a metallic cobweb-patterned tail and is a rare species in high-altitude areas.
Rare Color Ranking
Colorful Black: The deep blue, nearly black scales refract blue, green, and red light under different lighting, with a strong metallic feel.
Fluorescent Purple Fairy: Special fluorescent scales shimmer with a rainbow of colors, creating an effect like something out of a fantasy drama when swimming.
Granny Gray: A rare gray with a high-end luster, comparable to a Morandi color art piece in the fish tank.