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Newly discovered Amazonian fish are already threatened
Publicado em 18 de maio de 2022
The fish belong to a subfamily called South American darters. The discovery brings the known number of darter species to five.
One species, Poecilocharax callipterus, is distinguished by its long, striking red-orange fins and a dark spot at the base of its tail.
The other new species, Poecilocharax rhizophilus is the most miniature darter ever identified. This tiny fish only measures about three-quarter inch (2 centimeters) in length as a mature adult. It’s bright yellow with a [...]
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Shocking discovery: Electric eels hunt in packs in Amazon rivers
Publicado em 14 janeiro 2021When darkness comes, electric eels emerge from South American river bottoms to attack their prey with up to 860 volts of electricity—enough to kill a person. Now, scientists have revealed the snakelike fish don’t always go it alone: They hunt in packs, similar to wolves, orcas, and some species of tuna. The finding, a first among electric fishes, may open the way for new studies to investigate when social predation evolved among fishes. “I was shocked,” says Douglas [...]ver notícia