1. Differences in Fin Morphology
Male Siamese Fighting Fish: The fins (dorsal fin, anal fin, caudal fin) are broad and long. When they are spread out, they fan out like a "gorgeous dress."
Female Siamese Fighting Fish: The fins are short and small, with a simple shape and no obvious extensions.
2. Comparison of Body Colors
Male Siamese Fighting Fish: The body color is bright (such as red, blue, green, etc.), and the scales have spots or black stripes, just like a "palette in the water."
Female Siamese Fighting Fish: The body color is dull and uniform, mostly grayish white or light in color, similar to being "without makeup."
3. Abdominal Characteristics
Female Siamese Fighting Fish: There is a round "navel"-like protrusion on the abdomen (a sign of the ovary), and the overall abdomen is rounder.
Male Siamese Fighting Fish: The abdomen is flat without any protrusions.
4. Location of the Genital Pore
Female Siamese Fighting Fish: There is a white-yellow genital pore between the pelvic fins and the anal fin.
Male Siamese Fighting Fish: There is no such feature, and the genital pore is more concealed.
5. Behavioral Differences
Male Siamese Fighting Fish: They are highly aggressive and will blow bubbles to build a nest for courtship.
Female Siamese Fighting Fish: Their behavior is passive, and they will stay still and wait during courtship.