Note 32 — Chapter II

The American lamprey likes best shallow places in rapidly flowing streams where there are pebbly bottoms. Out of the pebbles it builds its circular nest of stones, which vary in size from a hen’s egg to a cannon ball. It carries the stones in its mouth. The eggs are laid in these nests, and the young remain here until able to care for themselves. For full account of nest building fishes see the Christmas number of Harper’s Monthly for 1883.