Author: Lozano-Vilano & Contreras-Balderas, 1993
FBname: Charco Palma pupfish
Comments: The springs at Ojo Charco Azul (= Barreno) are part of the Bolsón de Sandia complex, at 1600 m above sea level, and at the foot of Sierra Montelongo Pedregoso.  The area is semiarid, with cacti other succulents; a densely woody area of cedar around the springs, except on the eastern side.  Formerly the water was crystal clear at 19-20°C, but recently after depletion, the water is brown.  Aquatic vegetation includes <i>Ceratophyllum</i>, <i>Potamogeton</i>, <i>Typha</i>, <i>Eleocharis</i>, <i>Lemna</i>, <i>Utricularia</i>, <i>Scirpus</i>, and <i>Chara</i>;  crayfish <i>Cambarellus</i> sp. was observed.  The bottom is loamy or muddy (Ref. 26729).  Not a seasonal killifish.  Is very difficult to maintain in aquarium (Ref. 27139).