Males guard nests and attract females to spawn there. Multiple females may leave their eggs in a single male's nest. Female
How many babies do gobies have at a time?
Female round gobies mature at 1-2 years with clutch (100-4000 eggs) related to body size. They can spawn every 20 days from April to September and have a maximum lifespan of about 4 years.
Where can I find gobies?
PATHWAYS/HISTORY: Round gobies are native to the Caspian and Black Sea regions, including their tributaries. They have been introduced to the Great Lakes region of North America, probably in ballast water discharged by transatlantic ships originating from Eastern Europe.