“A few fish, however, form a sort of nest for the protection of their eggs and young; and in some instances, the male remains as a guard over the fry until they have acquired sufficient strength and agility to venture forth into the world. The little sticklebacks, common in ponds, furnish and interesting example of the exercise in this instinct” — Goodrich, 1859
S. G. Goodrich Animal Kingdom Illustrated Vol 2 (New York, NY: Derby & Jackson, 1859)
2080×2400, 4.3 MiB
887×1024, 500.9 KiB
554×640, 198.8 KiB
277×320, 49.7 KiB