Japanese scientists have demonstrated that male medaka fish can mate an average of 19 times a day, releasing more than half of their sperm production in the first three copulations.
Among animals that have multiple partners and deposit eggs outside...
Lourdes Higueras, a recent graduate of the National University of Tierra del Fuego, Antarctica and South Atlantic Islands (UNTDF), made an important discovery in her final thesis: the identification of a new species of freshwater fish never before recorded...
Studying the oceans and seas poses a major challenge for researchers due to their vastness. Technological advancement is crucial for oceanographers in their goal to preserve the marine environment and document predation events.
Observing the behaviors of marine fauna is...
Entre RÃos was the only province in the region that did not have legislation regarding the commercial fishing of dorado, a key natural resource.
The Chamber of Deputies has unanimously passed a bill declaring the dorado as a fish of...
Last September, residents and fishermen from the Mangrullo area, at the southern end of Rosario, and in the neighboring Villa Gobernador Gálvez, reported the unusual fish mortality on the shore of the Paraná River.
After analyzing water samples and tissues...
A strange event took place in the deep waters off the coast of California, when researcher Alison Laferriere from the Scripps Institution of Oceanography found an enigmatic oarfish, known as the "fish of the end of the world". While...
A group of scientists has identified a new species of fish in a contaminated cave in southern China.
During an expedition in 2023 in several caves near Guangxi, researchers found unusual fish in the subterranean waters.
Characteristics of the New Species
The...
Microplastics are not only found in the air, but also in the interior of animals that often serve as food, such as fish. In this sense, a group of scientists from the Amazon State University discovered that several species...
