Abstract
One of the fundamental tradeoffs in egg production is the cost and benefits of laying few larger eggs or numerous small eggs, because organisms are limited by the amount of energy it can expend on each egg. The parental decision in laying eggs a certain size is based on the survivorship of the offspring. Cichlids is our model organism because there are almost 2,000 species of Cichlids that lays a variation of eggs size and each species have a fixed egg size. Thus, we can investigate the relationship between egg and fry size among a diversity of cichlid fishes in attempt to answer whether investment into the egg ultimately determines the size of the fry. Around 50 students have participated in this research and collectively -over the years- bred 50 species in captivity thus far. Within the 50 species, there seems to be a positive relationship between egg size and fry size.