Meet the Daring Matador Guppies of Trinidad

Guppies have developed a unique defense mechanism against predators like cichlids. By changing their eye color to black, they attract attacks to their heads, allowing them to dodge and escape. This tactic is facilitated by melanophores, which rearrange melanin to alter eye color. Larger guppies are more adept at this, suggesting an evolutionary advantage. This strategy is akin to a matador's cape, misleading predators and enhancing survival.

What is the primary reason guppies attract predators to attack their heads?

• To protect their vital organs

• To lure the predator into a trap

• To make the predator tired

• To confuse the predator

How do guppies use conspicuous coloration in their defense strategy?

• To blend in with their surroundings

• To signal other guppies

• To direct predators where to attack

• To scare away predators

What role do melanophores play in guppies' eye color change?

• They help in swimming

• They contain pigment that changes color

• They store energy

• They produce light

Why is the eye color change compared to a matador's cape?

• It is a distraction technique

• It is used to attract mates

• It is a form of camouflage

• It is a way to signal danger

What did researchers find about larger guppies in relation to this defense mechanism?

• They do not use this mechanism

• They are better at using it due to a larger pivot point

• They have a smaller pivot point

• They are less effective at using it