Out of crisis comes opportunity. An asteroid-triggered mass extinction 65 million years ago famously wiped out the dinosaurs – but it may also have helped establish the modern reef fish communities. Image: Foto di Spalle
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Did our distant ancestors emerge face-first into the world? A new fossil belongs to the earliest known fish to possess important facial bones seen in most modern reptiles and mammals today. Its other bones are much more primitive. Image: Brian Choo
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Family histories don’t come much more bizarre. Three-quarters of the fish in the sea can trace their origins back to a freshwater ancestor. The finding highlights how important rivers and lakes are as a source of new species, just as that supply is under threat from disappearing freshwater habitats. Image: mattk1979
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Nice fangs, shame about the bite. The oversize fangs of some dragonfish may help them to snap their weak jaws shut around prey, improving their odds of bagging a meal. Dragonfish go after large prey, and so have jaws that open wide. Closing them quickly is not easy, since drag increases exponentially with jaw length, and rises even more if bulky prey are sticking out the front. Image: Citron
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Could fish hair be the key to improving robotic submarine manoeuvrability?. Read more…...
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