Newly discovered orange-patterned Amazon fish may already be endangered

Scientists have discovered a new species of tiny orange-patterned fish in the Brazilian Amazon and warn that it may already be at risk of extinction.

The New Species

The fish, named Laimosemion laranja, is a killifish measuring less than three centimeters in standard length. Males have rows of bright orange spots along the front half of their bodies, followed by bold orange chevron patterns near the tail. The name laranja means orange in Portuguese, referring to both the color and the fruit, and also pays tribute to Laranjal do Jari, the municipality in Amapá where the species was found.

Discovery and Habitat

The discovery was made during fieldwork in the Rio Cajari drainage in southern Amapá, a state in northern Brazil. The research team included scientists from the Universidade Federal do Rio Grande do Norte, Instituto Peixe das Nuvens, Universidade Federal do Pará, and University of West Florida.

Lead researcher Yuri Abrantes of the Universidade Federal do Rio Grande do Norte said: "We are developing a research project aimed at investigating the evolution of life-history strategies in freshwater fishes of the family Rivulidae across different biomes in Brazil."

The team examined body proportions, counted scales, studied skeletal features, compared characteristics with closely related species, and analyzed mitochondrial DNA to confirm the fish was a distinct species.

Conservation Concerns

Scientists have found the fish in only three small forest pools near Laranjal do Jari, and every known location shows signs of environmental disturbance. The species' entire known range is estimated to cover just 25 square kilometers.

Deforestation, mining, and urban development are putting pressure on the surrounding habitats. One of the pools is close to water discolored by sediment from mining activities. Another is located within the city itself, where plastic pollution is affecting the environment.

Because its habitat is so restricted and faces multiple threats, the researchers believe the fish meets the criteria for classification as Endangered under guidelines established by the International Union for Conservation of Nature (IUCN). The team has recommended expanding the boundaries of the nearby Rio Cajari Extractive Reserve to include the areas where the fish lives.

The study was published in the open access journal Zoosystematics and Evolution.

Why it matters

The discovery highlights how much remains to be discovered in parts of the Amazon that are poorly studied and increasingly threatened. Without stronger conservation measures, species such as Laimosemion laranja could face serious threats before researchers have the opportunity to fully understand them.

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Sources

• sciencedaily.com: Scientists discover stunning new Amazon fish that may already be endangered | ScienceDaily
• thenews.com.pk: Scientists discover stunning new Amazon fish species, and it’s already endangered

This article was drafted with AI assistance and checked against the sources above. Company claims are reported as claims. Cover image is AI-generated.