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Re: A question concerning the BCF hypothesis

> > << I'd say a four-chambered heart looks like a prerequisite for
> endothermy,
> >  doesn't it? >>

> > This isn't obvious. Some fish are partially endothermic and they have
> > two-chambered hearts.
> Dinogeorge, do you mean the tuna fish? Or are there some others?

There are a few others, such as the Great White Shark.