Researchers have discovered a new extinct species of coelacanth that lived 380 million years ago.
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Sandfish keep the rivers clean and the food web balanced but their numbers are declining. Farmers are helping to lift these numbers.
When a male bluehead wrasse is removed from the group he dominates, the largest female changes sex, rapidly transforming ovaries into sperm-producing testes. Molecular research shows how.
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Lecturer, Deakin University
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Jenny Graves is a Friend of The Conversation.
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