New study shows ocean acidification is changing the behavior of fish in small but serious way

New study shows ocean acidification is changing the behavior of fish in small but serious way. Adelaide University researchers published in the Journal of Animal Ecology, examining how future ocean conditions could affect fish behavior on coral reefs. The team found that as ocean acidification reduces reef habitat complexity, small reef fish form smaller shoals and lose some protective benefits of larger groups, affecting feeding, predator avoidance and social dynamics. The biggest changes appear linked to habitat loss and social disruption rather than direct effects of heat or acidity on individual fish. The findings underscore broader implications for fisheries, tourism and coastal livelihoods globally.