#BAC2022 – Rio Urubaxi, Rio Negro tributary, Amazonas, Brazil. By Marco Antonio Cunha

BIOTOPE AQUARIUM MODEL: The cardinal neon is the symbol fish of the blackwater rivers and creeks of the Rio Negro Basin, impossible to think of a blackwater biotope aquarium and not think of Paracheirodon axelrodi. The Urubaxi River, located in the middle Rio Negro, municipality of Santa Izabel do Rio Negro, is one of the main collecting points. The biotope project was designed to recreate the underwater landscape of the river, from the perspective of a diver facing one of the banks, looking at the river bank, with its roots and trunks exposed, part of the flooded forest, responsible for the great amount of organic matter present in its waters, dyeing them black, which further highlights the colors and iridescence of the neons. A background composed of coconut fiber and roots, many leaves and seeds in the background and a large trunk, in addition to aquatic plants and ferns growing on the bank make up the habitat of the cardinal neon and other species, such as Hemigrammus bleheri, also present in this project. ✅ Read more about this biotope and aquatic life in it on #BAP, #BIN Section ► ✅ Find out more about this biotope in the #BAM Section ► ✅ Check out the expedition reports on this region on #BAP, ARTICLE section ► ✅ and subscribe to #BAP Newsletter for updates ► ✅ follow us on Facebook ►