Choice consequences: salinity preferences and hatchling survival in the mangrove rivulus fish (Kryptolebias marmoratus)

For the salinity preference in a lateral gradient experiment time spent in each salinity chamber was obtained using JWatcher and then combined into one data sheet. Then in R the time spent per chamber was converted to an average preference score and we then calculated the variance of each fish's preference and this is defined as the strength of preference. Data for the egg laying preference experiment was manually entered into excel at the time of each egg check. Eggs were then checked daily for hatching and as eggs hatched this data was also entered in manually to an excel file.