Extremely Small Clutch Size and Juvenile Survival in a Social Cichlid of an African Great Lake.

Neolamprologus buescheri, a cooperatively breeding cichlid fish endemic to Lake Tanganyika, exhibits one of the slowest life histories documented among teleost fish. With remarkably small clutch sizes ranging from one to seven eggs (median = 3) and exceptionally high juvenile survival rates of over 50% within two months, this species deviates significantly from typical fish reproductive patterns. Its slow somatic growth, prolonged parental care, and occupation of deep-water habitats place it at the extreme end of the fast-slow life-history continuum among fish.