While your goldfish may look tiny now, without a tank limiting its size ... The bottom feeders stir up sediment, uproot plants and make the water murky, disrupting aquatic ecosystems and making ...

These big fish are also big eaters, feeding on plants, insects ... there are other reasons you should keep that goldfish in its tank. More from Science Goldfish may look small and cute in your ...

While your goldfish may look tiny now, without a tank limiting its size ... The bottom feeders stir up sediment, uproot plants and make the water murky, disrupting aquatic ecosystems and making ...