Description of Work Bighead, silver and grass carp larvae were raised in the laboratory. Larvae were observed during the hatching process. Recently hatched larvae were placed in 10 feet tall clear vertical containers where the carp were exposed to light for a similar amount of time during the day as they would experience in a river during the spawning period. Depth selection, swimming behavior, and swimming speed were observed in both day and night periods. Relevance & Impact Understanding the stage at which Asian carps begin swimming is critical to development of models that predict whether a river is adequate for reproduction by Asian carps. Knowledge of where and how Asian carp larvae arrive in nursery areas is required to focus [...]
