Effects Of Crowding Goldfish In a Flask

1214 Words5 Pages
Effects of Crowding Goldfish in a Flask Kari Prena University of Michigan Abstract: In the experiment, we wanted to see if crowding the fish affected the metabolic rates due to stress. We measured the metabolic rates for fish alone in a flask and we measured the metabolic rates of the fish when two fish were placed in the flask. In the end, the results were inconclusive and there was no significant difference between the single fish and the crowded fish. The fish did not seem to be more stressed when placed with another fish. In the future, the experiment should be repeated with a larger sample size. Introduction: In a natural environment, fish have a lot of space to move around in, but sometimes humans force fish to live in artificial tanks. Fish farms and pet fish are placed in, small and sometimes crowded tanks, putting the fish in a more stressful environment than their natural one. This arrives to the question of how much space a fish needs to feel comfortable, and how it affects the fish behavior and physiology. The goal of this experiment is to see if putting two fish in a flask stresses out the fish by comparing the metabolic rate of a single fish in a flask to the metabolic rate of a fish when it shares the flask with another fish. By putting two fish in the flask at once, the fish will be crowded and we can measure its stress by it metabolic rate. If multiple fish are held in the same flask at once, their stress will increase, increasing their metabolic rates compared to a single fish in a flask. Methods: As a control to the crowded fish, the metabolic rate for a single fish in a flask was measured. The initial oxygen in the flask was measured, and then the fish was put in a flask for 30 minutes. Then, the final oxygen content was measured in the flask. We calculated the milligrams of oxygen consumed by the fish per gram of fish per

More about Effects Of Crowding Goldfish In a Flask

Open Document