Blue danio Blue danio The blue danio or Kerr's danio,Turquoise danio ("Danio kerri") is a tropical fish belonging to the genus "Danio" in family Cyprinidae. The blue danio is found on the islands of Langkawi and Ko Yao Yai in Malaysia. It is a blue-colored, deep-bodied danio with several pinkish/gold lines from tail to gills which may or may not be continuous, over a powder blue side. The blue danio is a peaceful, active schooling fish, so is usually kept in groups. They prefer a well-planted environment, but still need plenty of space to school. Blue danios are often kept in water
Danio annulosus deep, instead of round or deep wide. No sexual dimorphism is present in Danio annulosus. Healthy adult individuals in life have dark stripes which include circles which are blue in color with the space in between including the circle centres are orange in color. A unique orange spot is seen in the front of the black cleithral spot. The holotype DU 50001 is an adult individual and probable female, 71.5 mm in length and collected form a Chittagong Division, Rangamati District, Borokal, pool at bottom of Shuvolong Waterfall on 28 Nov 2014. Danio annulosus Danio annulosus is a species of