Gobies: Gobioidei

Some open-water species of gobies form schools. Many gobies are territorial, especially during the breeding season. Males often care for developing eggs. Females lay a few to several hundred small eggs, attaching them to the underside of rocks or onto plants or coral. The eggs usually hatch in a few days, and the young are dispersed by water currents. In freshwater species, the larvae (LAR-vee), or young, are swept downstream by the water current. The young spend a few weeks to months at sea before returning to freshwater.