Study: Single and pairs of fish in aquariums are more stressed than groups
Watching a fish or two swim around a tank can be relaxing for you — but surprisingly stressful for the fish.
A new study found that common aquarium fish fight more and act less like themselves when they're lonely. Just as people choose to squeeze into a crowded nightclub rather than roam around an empty bar, it seems, certain fish prefer to have lots of companions.
It was the first study to look at the well-being of fish in home aquariums, and the results suggest that we may owe more to our fish than just keeping them from going belly-up.
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