I have a pair of peacock gobys that spawn at least once a week. She lays 100s of eggs on the glass & Dad fans them. They live in my 90g community tank. Every morning the eggs are gone, to who knows. I tried to put the pair into the only other extra tank I have, a 15g, but they were very unhappy in there. Since the eggs are on the glass, I am worried about scraping them off, to put in the 15g, they might get damaged. Also, I worry about fungus, since Dad wouldn't be caring for them in the smaller tank. I've tried to offer them a piece of slate, but they choose the glass.