Poisonous and inedible species imitate each other in colors. This is known as the Economy of Coloration.

This mechanism cuts down the number of colors and warning patterns the predators have to avoid eating.

Thus it reduces the number of poisonous varieties that might be eaten by mistake.

This is named after the 19th century German Zoologist Fritz Muller as “Mullerian Mimicry”.

Economy of colours:

Black with any bright colour (yellow, orange, red, bright green / blue)

means “KEEP AWAY! I am poisonous and dangerous!”