Tubelip wrasses eat dangerously, daring to dine on sharp corals lined with stinging cells. New images reveal the fish’s secret to safe eating: lubing up and planting a big one on their dinner. “It is ...

There aren’t many reef-feeding fish out there, mostly because coral reefs have developed defense mechanisms to prevent becoming a fish’s lunch. Among those, some have external jellyfish-like ...

One feature that has long captured the attention of biologists and aquarists alike is the unusually large lips of some cichlid species. These thick, plump lips have puzzled researchers for years, ...