For the record: Cuttlefish
The successful breeding of Cuttlefish is based upon an 'intelligence' factor.
When a large Male comes to dominate a harem of females.
Other 'smaller' males exhibit a greater intelligence and change their colours to appear 'female' - especially on the side that is presented to the Larger Male who sees 'him' as just another female joining his harem. One he doesn't have to chase and win over (strange he doesn't 'notice' this).
Thus the smaller male Cuttlefish that displays his 'feminine' side - gets closer to the 'real' female Cuttlefish and thus manage to breed right before the larger Male, who still doesn't 'click'. I guess the Larger Males like a bit of 'same sex' going on between two females in his territory.
Regardless, it is the smaller males that use their minds to outwit, deceive and infiltrate - that breed the most.
Alas, the intelligence factor comes at a price.
The species, is extremely 'physically' fragile, for want of an vivid visual display.