Rainbow gudgeon (Sarcocheilichthys nigripinnis)

The black-finned squid has a gray back and sides with black and brown markings, and a white belly. There are black vertical stripes along the central axis of the body side from the upper back corner of the gill cover to the base of the caudal fin. The rear edge of the gill cover, isthmus, and thorax are all orange. There is a dark black vertical stripe on the front of the body at the rear edge of the gill opening. The dorsal fin The tail fin is darker in gray and black, and the other parts are black. During the reproductive period, the male fish has more obvious black markings on the side of the body, generally dark black, the cheeks, jaws and base of the pectoral fin are orange-red, the tail fin is yellow, and there are many white beads on the snout; the ovipositor of the female fish is slightly extended, and the body is The color is not as bright as the male fish.

Adult size: 15 cm

Temperature: 18 - 24°C

Food: fish feed, red worms, black shell shrimps