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The Aspredo Cat fish

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In one of the 'cat-fishes'—the Aspredo—the mother carries the eggs about with her, and this is managed in a very remarkable way. Just at the time she lays her eggs, the skin of the under surface of her body becomes swollen and spongy, and into this she presses her eggs by lying on them. Here, snugly sheltered, they remain till hatched!