[Peter Finke]

Nearly all young fish, cichlids inclusive, show shoaling behaviour before claiming individual quarters. Young Paros do often until a length of about an inch. And many fish that have developed a territorial behaviour already show shoaling for some days when introduced into an anvironment new to them. Your fish are young and are newly introduced in that tank; they must learn what a strange thing glass is. The Boraras led them to shoaling, too. But they will stop this behaviour soon if offered enough places for retreat.