New research into these fascinating animals suggests that their broad capacity for adaptability in water, including flexible diet and behaviour, could have been key to propelling them ashore. However once there, their success on land has been due to new, highly-specialised behaviour.
The researchers, from the University of New South Wales and University of Minnesota, compared the fish’s evolution in the water to being a “jack of all trades”. In contrast, their subsequent adaptations on land saw bennies become “a master of one”.
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