Blue / Green Moscow DeltaPoecilia Reticulata blue green moscow delta guppies Both the colors and majesty of this fish are comparable in splendor. Males mature to 2 inches. In the right lighting, every move of this sophisticated fish will showcase an array of colors ranging from a bright blue to a royal indigo on their body. Each tail and dorsal fin displays a gorgeous gradient of varying colors. No two tails or fins are colored exactly alike, but all of these handsome fish