Over 150 species of tetras have been identified in the world. They are origin in the tropical region of South America and also in the damp climate of east Afrika where exactly lives in the wide rivers.
Most tetras are peaceful, however, some others are aggressive or semi-aggressive. Males are smaller than females. When breeding period, females commonly lay their eggs on the floating plants. The diets of tetras are naturally brine shrimp, small blood worm, and algae.
If you want to keep tetra fish in an aquarium, you have to prepare the tank size at least 10 gallons. Most tetras require the tropical set up the condition to live. There are different interesting types of tetras which in varying color and characteristics.
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Penguin tetra (Thyeroa boehlkei)
Penguin tetra has a silver body with black line penguin-like along the body on the sides. It can be found in the shallow of Amazon rivers.
This tetra lives in a small stream to get food, such as crustaceans, worm, and insects. Penguin tetra reaches about 3 cm in length and stays in lifespan 5 to 8 years.
Buenos aires tetra (Hyphessobrycon anisitsi)
The body is silver with red marked fins and dark line striking the glaring line neon-like. The length of its body is 7 cm that has a lifespan of 5 to 6 years.
The tank should be 20 gallons with temperatures of about 23 to 27 Celsius. Buenos Aires tetra is Aggressive fish that was found in South America in 1907.
Diamond tetra (Moenkhausia pittieri)
Diamond tetra is native to Venezuela where exactly lives in the resident of Aragua and guara rivers and valencia lake. It has silver color combined grey, black, and yellow colors.
This tetra grows about 6 cm in length that stands in lifespan 3 to 5 years. Diamond lives in the temperature water of 23 to 28 celsius and ph of 6.0 to 7.0.
Congo tetra (Phenacogrammus interruptus)
As the name implies, congo is found in congo rivers. The body has green, red, blue and yellow-colored and large scales. Congo tetras are the large tetra that reaches 3 inches in length.
It lives in the dark or low light zone of water and the ideal temperature of 23 to 2 Celsius and ph of 6.0 to 6.5. It requires a minimum size tank of about 30 gallons and lifespan 3 to 5 years. The body of this tetra grows up about 3 inches or 7.5 cm in length.
Bloodfin tetra (Aphycharax anisitsi)
Bloodfin is peaceful fish that lives in the temperature of water around 21 to 27 Celsius. The body color is silver with red marked on its tail and orange pattern around the heads.
This type of tetra prefers to live in the temperature 21 to 27 Celsius in the minimum tank size of about 20 gallons. It grows up to 5.5 cm and stands lifespan 5 to 6 years.
Rummy nose tetra (Hemigrammus rhodostomus)
Rummy nose tetra has a unique appearance color. The body color is bright greenish with red marked on the head and eyes, and black white stripes on the tail. It reaches 6.5 cm in mature and has a lifespan of around 5 to 6 years. Rummy nose tetra is peaceful tetra that lives in the temperature of 22 to 27 Celsius.
Emperor tetra (Nematobrycon palmeri)
Emperor tetra is a peaceful fish that reaches 4 cm in length. It has a lifespan of about 4 to 5 years and ideally lives in the water temperature of 22 to 27 Celsius. The males have purple marks while the females have a grayish pattern.
Lemon tetra (Hyphrssobrycon pulchripinnis)
As the name suggests, lemon tetras prefer to live in acidic water at the level of 5.5 to 8.0 and temperature around 22 to 28 celsius. It grows 2 inches or 5 cm in length and has a lifespan of 4 to 5 years. This bamboo is origin to South America that has bright yellow patter and red marked on the top of eyes.
Ember tetra (Hyphessorbrycon amandae)
Ember tetra is also known as fire tetra due to its bright orange color fire-like. It can be found in the rivers of central brazil. This tetra is an active, peaceful and playful fish that it grows up to 2.5 cm in length.
The lifespan of ember tetra is naturally 2 to 4 years. It prefers to live in a water temperature of 20 to 28 Celsius.
Cardinal tetra (Paracheirodon axelrodi)
Cardinal tetra is native to Venezuela, Brazil, and Colombia. It requires of minimum tank size of about 20 gallons. It survives in hardy conditions till the temperature 23 to 27 Celsius. The size of adult cardinal tetras is 5 cm. Cardinal tetra is Omnivorous fish that has Lifespan 2 to 4 years.
Red eye tetra (Moenkhausia sanctaefilomenae)
The name of red eyed tetra comes from red marked on the top of eyes. The body is silver to golden with black pattern on the tail and yellow banded fins. Red eye tetra is also known as yellow-banded moenkhausia due to its fin color.
Red eye tetra can be found in the rivers of eastern Bolivia, eastern peru, Paraguay, and western brazil. It commonly grows a length of 7 cm and has lifespan about 3 to 5 years.
Black phantom tetras (Megalamphodus megalopeterus)
Black phantom tetra is found in cental Brazil and Paraguay. This tetra has black translucent body with bright blue line elongated on its sides.
It is generally kept in the tank about 20 gallons on the temperature of 22 to 28 Celsius and Ph around 6.0 to 7.5. The body size is on an average of 3.5 cm that has a lifespan of about 5 to 6 years.
Blue tetra is origin to Amazon Rivers that has attractive look. The body is dark blue with shiny blue line in the center of the body. This type of tetra naturally reaches about 2.3 inches in length and has lifespan 3.5 years in supported condition.
Blending heart tetra (Hyphessobrycon erythrostigma)
Blending heart tetra typically has red spot heart shaped-like on its sides which also give it name red tipped tetra. It is founs in the amazon river basin, and other river basins of South America.
This tetra requires the minimum tank size of about 20 gallons with the temperature water of 22 to 27 Celsius and ph of 6.5 to 7.0.
Blending heart tetra is a peaceful fish that reaches about 6.5 cm and live up 3 to 5 years in good condition.
Flame tetra is also called red tetras that has transparent body combination color of yellow and red body. It is a smallest tetra which reaches about 1.2 inches in length.
Neon tetra (Paracheirodon innesi)
Neon tetra was found in the Amazon rivers in 1934. It is a peaceful fish that reaches 3.5 cm in length and has a lifespan of about 8 to 10 years in a good environment.
This tetra lives in the water temperatures of 70 to 80 F and pH 6.0 to 7.0. The neon tetra is an attractive fish that has a transparent body with a fluorescent blue line and red marked from the middle of the body to tail.