The luminous cobra guppy (Poecilia reticulata), also called the yellow cobra guppy, is a popular freshwater fish prized for its vibrant colors and striking, snake-like pattern. This hardy species is relatively easy to care for, making it an excellent choice for beginners and experienced aquarists alike. Like other guppy varieties, they are peaceful and thrive in a community tank with similarly tempered fish.
Appearance
Color and pattern: Male luminous cobra guppies have a vivid yellow or gold base with a distinct, intricate black or reddish "cobra" pattern of intertwined lines and spots across their bodies. They have colorful tails that may feature red and purple accents. Females are typically larger and less colorful, with duller, gray or silver bodies.
Size: Adult luminous cobra guppies typically reach a length of 1.5 to 2 inches. Males are usually smaller than females.
Distinguishing males and females: In addition to size and color, males can be identified by their long, pointed anal fin (gonopodium), which is used for reproduction. Females have a rounded body, especially when pregnant, and a dark "gravid spot" near the anal fin.