We studied growth and feeding of fish larvae from two basins of Chilean Patagonia.
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Northern basin (NB) was vertically stratified, with warmer and most productive waters.
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Southern basin (SB) showed mixed conditions, colder and less productive waters.
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Larval Maurolicus parvipinnis were larger-at-age, preying more on smaller size in NB.
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Larval Sebastes oculatus varied prey from copepod nauplii (NB) to copepodites (SB).