Wild-descended F1 pair (first generation bred from wild-caught parents), collected at Puente Sur, Uruguay.Endemic to the Atlantic coastal river basins of Uruguay, this striking annual is slipping away as its seasonal wetlands are drained and built over. Owning a pair is a real chance to help hold the line for a species running out of wild ground. A true standout for the serious annual killifish keeper.Care: Annual species. Spawns in peat, eggs incubate 1 to 2 months. Conservation status: this f...

A rare hometown annual from the pools around Durazno, Uruguay.Wild-descended F1 pair (first generation bred from wild-caught parents), collected at Rio Negro, Uruguay.Named for its home city of Durazno, this little annual is endemic to a scattering of seasonal pools in Uruguay's Rio Negro region. It is a genuine rarity in the U.S. hobby, so every captive-bred pair helps keep the line going.Care: Annual species. Spawns in peat, eggs incubate 1 to 2 months.

Wild-descended F1 pair (first generation bred from wild-caught parents), collected at Rio Negro, Uruguay.The name honors the Arachan, the people of Uruguay's Cerro Largo region, where this fish still appears in temporary freshwater pools and shallow swamps along the border. Seldom seen in the U.S. hobby, it is a treat for collectors who love a fish with a story.Care: Annual species. Spawns in peat, eggs incubate 1 to 2 months.

The Fighting Gaucho: a jeweled annual of coastal southeastern wetlands.Wild-descended F1 pair (first generation bred from wild-caught parents), collected at Ruta 9 Capacho, Uruguay.The nickname says it all. Gauchos are the legendary horsemen of the South American pampas, tough, proud, and bold. The males of this species live up to it, flaring their fins and jostling to rule their patch of a shrinking seasonal pool. Care: Annual species. Spawns in peat, eggs incubate 1 to 2 months.

Matilebias juanlangi: a wild-line annual killifish from the wetlands of Uruguay.Wild-descended F1 pair (first generation bred from wild-caught parents), collected at Paso De La Cruz, Uruguay.A seasonal annual endemic to Uruguay's Neotropical wetlands, where its shallow pampa pools dry out each year. Its wild habitat is shrinking fast, which makes captive-bred fish like these valuable.Care: Annual species. Spawns in peat, eggs incubate 1 to 2 months.

The Dusky Pearlfish: bright blue iridescence on a wild-line Uruguayan annual.Wild-descended F1 pair (first generation bred from wild-caught parents), collected at Rio Negro, Uruguay.A pampa-pool annual from the Rio Negro region, prized for its glowing blue sheen and fine spotting.Care: Annual species. Spawns in peat, eggs incubate 1 to 2 months.

Rare wild-line annual killifish from Uruguay, seldom offered in the U.S.Wild-descended F1 pair (first generation bred from wild-caught parents), collected at B.G. Venancio Flores, Uruguay. Collection code URU 25-03.A striking seasonal killifish endemic to the wetlands of Uruguay. The species is named for the Charrua, the indigenous nomadic people of the Rio de la Plata region. Care: Annual species. Spawns in peat, eggs incubate 1 to 2 months.