The tetras are a schooling fish, which means, if you buy one, you need to buy him friends too. Recommendations are at least six tetras at the minimum. To increase the colour in your aquarium, you can include many schools of tetra fish, including the neon tetra, the Congo tetra and the serpae tetra. The tetra species will become stressed if left alone or with too few fish in the aquarium.
The neon tetra is one of the most popular breeds of tetras. This tetra can be found in both black water and clear water streams, specifically in Brazil, Columbia and Peru. The neon tetra will grow no longer than five centimetres The colours of the neon tetras will glow more brightly against black or dark substrate. The red tails and electric-blue bodies of the neon tetra will light up any aquarium.
The Congo tetra is extremely sensitive to poor water conditions. It is important to remember frequent water changes if you decide to buy Congo tetras. Like all tetras, the Congo tetra is a schooling fish and should be accompanied by at least six other Congo tetras. This particular breed of tetras is skittish and nervous. To combat their shy personalities, provide the fish with plenty of places to hide, while still leaving open swimming space available. Avoid adding confrontational or aggressive fish to a tank with Congo tetras. It will cause stress and anxiety to the fish. Originally found in the Zaire River, this fish is used to warmer waters.
The serpae tetra is known for its rainbow of red hues. From reddish-brown to lipstick red, the serpae tetra can be found in any shade of red. This fish has also been called the blood characin, the jewel tetra and the red serpa, among other names. The only portion of the serpae tetra that is not read is the dorsal fin. The dorsal fin is black with a white fringe.
The tetras are a docile breed who appreciate a peaceful living environment. Kept together, they will happily brighten up your aquarium.