It is relatively difficult to distinguish the sex of hexagonal dinosaur fish, especially in the juvenile stage. However, the sex discrimination of adult hexagonal dinosaur fish is relatively easy. Here are some common methods to distinguish the sex of hexagonal dinosaur fish:

1. fish body shape: the male hexagonal dinosaur fish is slender, while the female hexagonal dinosaur fish is chubby.

2. Fin shape: The dorsal fin and anal fin of the male hexagonal dinosaur fish are sharp, while the females are relatively short and round.

3. Color difference: During the breeding period, the body color of the male hexagonal dinosaur fish may become more bright and bright, while the body color of the female is relatively dim.

4. Abdominal depression: There are usually some depressions in the abdomen of female hexagonal dinosaur fish, while the males are relatively flat.