Ctenobrycon spilurus

Silver tetras have a silvery-gray color and a round flattened body, with the occasional slight olive green cast. There is some black at the base of their caudal fin. Some have a small dark spot near their gill covers. The only relieving bit of color is a glow of red in the rear portion of the anal fin (only in males). The dorsal fin is fairly short. It has a small mouth with enlarged lips. == In the aquarium ==

Commercially breed silver tetras are good for beginners. They are very active in daylight hours. The fish prefers a heavily planted aquarium with dim light. But an aquarium with plastic plants with driftwood will do too. As long as the fish have a place to hide. It is necessary to keep them in a school of 6–8 other silver tetras in a 30-gallon tank. That is long tank. With a pH range of 6.0–7.5. The temperature of the water should be . The fish are peaceful and can be kept with other non-aggressive fish. == References ==