I think they use their bright colours to attract females.
By just choosing them.
It may not be used to attract a mate, but male squids do have one tentacle which also serves as a sexual appendage.
A male bird shows bright feathers to attract a mate. What type of behavior is this?
they do an elaborate song and dance routine to attract the female and then mate much as other birds do when she accepts him.
It is the male that is the more colorful. They have to attract the mate.
The Goliath frog is assumed to be the world's largest species of frog. The male typically builds a nest to attract a mate, but the males will also generally fight one another to win a mate's attention.
Male polar bears usually fight with another male to prove to the female that he is the strongest
The male Bowerbird uses treasures to attract females.
Courtship Behavior
Geckos attract mates by preening, or essentially showing off their bodies.
No! not any monster can mate with any monster
Some birds attract their mates by displaying their beautiful colors. Other birds normally make sounds that will attract potential mates.