Silver tip shark

You aren't going to find any data on how long a fish can live out of it's natural environment. There are some very old koi, that are pampoered & kept in optimal conditions, in Japan. A normal comet can live at least 20 years, some puffers have been kept by people I know for 18.
 
Yes, and it's our responsibility to make sure they live as long as possible. One way we can do that is to keep them in as natural an environment as possible & others are weekly water changes & feeding fish more than just flakes everyday.
 
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