Researchers at the mouth of the São Vicente Cave system. Credit: Adriano Gambarini From Brazil’s Amazon, researchers report “spooky interactions” among surface- and cave-dwelling electric fish, revealing shocking behavior of 300 blind cavefishes whose ancestors adopted life in darkness tens of thousands of years ago. A study of weakly electric […]

PHOTOGRAPH: MIKE GIL New models of coral reefs show how fish species communicate with one another. The findings may well help save these threatened ecosystems. AMONG THE MANY egregious scientific inaccuracies of Finding Nemo—fish can talk, sharks form support groups, turtles wax their shells—perhaps none is more glaring than the conceit of fish maintaining […]

Although less than one percent of all water in the world is freshwater, it is what we drink and use for agriculture. In other words, it’s vital to human survival. York University researchers have just created a publicly available water quality database for close to 12,000 freshwater lakes globally — […]

A juvenile Pomacanthus imperator x P. annularis hybrid with striking intermediate patterns. Credit: Photograph by Y.K. Tea There Are Many More Angelfishes in the Sea Why do some fish species form hybrids while others don’t? In attempting to answer this question, new research has uncovered that angelfish are the chief […]

Using state-of-the-art robotics, a research team from the University of Konstanz, Science of Intelligence, and the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) shows that animals’ speed is fundamental for collective behavioral patterns, and that ultimately it is the faster individuals that have the strongest influence on group-level […]

ANIMATION Sharks’ non-bony skeletons were thought to be the template before bony internal skeletons evolved, but a new fossil discovery suggests otherwise. The discovery of a 410-million-year-old fish fossil with a bony skull suggests the lighter skeletons of sharks may have evolved from bony ancestors, rather than the other way […]

Researchers “counted” Japanese jack mackerel (Trachurus japonicus) in Maizuru Bay, Japan, through quantitative measurements of environmental DNA concentration. Credit: Reiji Masuda, Kyoto University River water, lake water, and seawater contain DNA belonging to organisms such as animals and plants. Ecologists have begun to actively analyze such DNA molecules, called environmental DNA, to […]

The 75-station pattern is typical for summer and fall cruises by CalCOFI, which has collected data on marine life and ocean conditions off the California coast. The original 1950s sampling plan was similar but covered a larger area, from the northern tip of California to the southern tip of the […]