Are smarter fish happier fish?


There is increasing evidence that farmers can augment brain growth in their fish by mimicking aspects of their natural habitat in farm sites.

But, from a welfare point of view, are bigger brains a blessing or a curse?

Anglers have long begged to differ, but the intelligence of fish has never been held in high esteem by the general public – the goldfish, for example, has long been ridiculed for its........................

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