John Endler
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John Arthur Endler is a Canadian ethologist and evolutionary biologist noted for his work on the adaptation of vertebrates to their unique perceptual environments, and the ways in which animal sensory
Endler's livebearer, now classified as Poecilia wingei
Animal coloration
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Animal coloration is the general appearance of an animal resulting from the reflection or emission of light from its surfaces. Some animals are brightly coloured, while others are hard to see. In some
John Endler
…biologist noted for his work on the adaptation of vertebrates to their unique perceptual environments, and the ways in which animal sensory capacities and colour patterns co-evolve. Born in Canada, Endler took his PhD degree at the University of Edinburgh in Scotland…
A brilliantly-coloured oriental sweetlips fish (Plectorhinchus vittatus) waits while two boldly-patterned cleaner wrasse (Labroides dimidiatus) pick parasites from its skin. The spotted tail and fin pattern of the sweetlips signals sexual maturity; the behaviour and pattern of the cleaner fish signal their availability for cleaning service, rather than as prey.
Bright coloration of orange elephant ear sponge, Agelas clathrodes signals its bitter taste to predators
Warning coloration of the skunk in Edward Bagnall Poulton's The Colours of Animals, 1890
In Roseate Spoonbills 1905–1909, Abbott Handerson Thayer tried to show that even the bright pink of these conspicuous birds had a cryptic function.