10 Tetra Fish Species


A close up of a fish

Tetras are one of the most popular freshwater fish species in the world, and one of the easiest to keep. Tetra fish come in a variety of shapes, colors, and sizes. Tetras can be found on every continent except Antarctica. Tetra fish are often kept as pets because they are small enough to live comfortably in an average-sized aquarium (10 gallons) with little technical knowledge or expense needed for their care. If you’re thinking about getting some Tetra fish for your home aquarium, here is a list of ten Tetra Fish Species that make great additions to any tank!

  1. Neon Tetra (Paracheirodon Innesi)
  2. Cardinal Tetra (Paracheirodon Axelrodi)
  3. Bleeding Heart Tetra (Hyphessobrycon Erythrostigma)
  4. Black Neon Tetra (Hyphessobrycon Dimidiatus)
  5. Chocolate Tetra (Serpae Tetra)(Hyphessobrycon Rhodostomus)
  6. Diamond Tetra (Moenkhausia Pristolemma)
  7. Red Eye Tetra/Cardinal Tetra(Paracheirodon Axelrodi “Red Eye” or “Green” )
  8. Glowlight Tetra (Hyphessobrycon Eribertoi)
  9. Neon Tetra (Paracheirodon Tetra)
  10. Zebra Danio/Zebra Fish (Danio rerio)

1. Neon Tetra (Paracheirodon Innesi)

A fish swimming under water

The Neon Tetra is one of the most well-known Tetras, and for good reason! The neon Tetra has a colorful blue-green body with red in its fins. Its vibrant appearance makes it popular in aquariums all around the world. These Tetras are considered to be very peaceful fish, so they can live happily in community tanks with other small fish species. Neon Tetras typically grow up to 2 inches long and should be kept in schools of 5+ individuals at a minimum (more is better). They like water with a pH of 6.0-7.5, and temperatures below 80°F (25°C). They are very easy to care for Tetras that only require the water to be clean and well-oxygenated. To best care for your Neon Tetra, you’ll have to earn their trust by feeding them food from your hands or gently netting them into a separate cup before adding them to your tank.

2. Cardinal Tetra (Paracheirodon Axelrodi)

A close up of a fish

The Cardinal Tetra is another colorful Tetra with vibrant colors of red, white, and electric blue. Another peaceful Tetra species that is great for community tanks with other Tetras or small fish species, they normally grow up to 1.5 inches long and should be kept in schools of 5+ Tetras. They like slightly soft, slightly acidic water with a pH around 6.0-7.5, and temperatures from 72°F (22°C) to 86°F (30°C). Although the Cardinal Tetra may not always come up to eat food from your hand or a net, they are generally very easy Tetra fish to keep as long as you provide them a good habitat with clean water.

3. Bleeding Heart Tetra (Hyphessobrycon Erythrostigma)

The Bleeding Heart Tetra gets its name from the red spot on the bottom of its belly. This Tetra variety normally has a golden or peach-colored body with red in its dorsal and anal fins. The Tetra should be kept in schools of 5+ Tetras, and it is considered to be a peaceful Tetra that will get along well with other Tetra species. The Bleeding Heart Tetra is one of the easiest Tetras to keep in an aquarium because it can adapt to almost any water condition and doesn’t require a special diet. It breeds easily in captivity, too!

4. Black Neon Tetra (Hyphessobrycon Dimidiatus)

The Black Neon Tetra is one of the most popular Tetras in the aquarium trade and is sometimes called “The Jewel Tetra” because of its shimmering color. The Black Neon Tetra contains black scales mixed in with shimmery blue-green scales, making this Tetra an attractive addition to any tank. They like water with a neutral pH (7.0), low nitrates, and lots of plants. They do well in groups of 6+ Tetras and can grow up to 1.5 inches long when fully mature. To best care for your Black Neon Tetra, you’ll want to feed them small amounts of food multiple times per day and provide plenty of hiding spots for this shy Tetra species.

5. Chocolate Tetra (Serpae Tetra)(Hyphessobrycon Rhodostomus)

The Chocolate Tetra is yet another Tetra species that gets its nickname from the brown color on its body. It also has a red tail and bright orange fins, which makes it one of the most attractive Tetras. They like soft water with a pH around 6-7 and temperatures between 72°F (22°C) to 82°F (28°C). They typically grow up to 1 inch long and should be kept in groups of 5+ Tetras. To best care for your chocolate Tetra, you’ll want to feed them smaller amounts of food several times per day and provide some hiding places.

6. Diamond Tetra (Moenkhausia Pterolebias)

The Diamond Tetra contains a shiny silver body with a red tail and is only 1 inch long as an adult. They are one of the more peaceful Tetra species that can be kept in groups of 5+ Tetras and do very well with other small, non-aggressive fish species. They like soft water with a pH of 6-7 and temperatures between 70°F (21°C) to 82°F (28°). Although they stay relatively small, Diamond Tetras may nip at large fins, so tankmates should be chosen carefully. To best care for your Diamond Tetra, you’ll want to keep them away from direct sunlight and provide them with live plants.

7. Cardinal Tetra (Proacheirodon Axelrodi Tetra)

The Cardinal Tetra is another colorful Tetra with vibrant colors of red, white, and electric blue. Another peaceful Tetra species that is great for community tanks with other Tetras or small fish species, they normally grow up to 1.5 inches long and should be kept in schools of 5+ Tetras. They like slightly soft, slightly acidic water with a pH around 6.0-7.5, and temperatures from 72°F (22°C) to 86°F (30°C). Although the Cardinal Tetra may not always come up to eat food from your hand or a net, they are generally very easy Tetra fish to keep as long as you provide them with plenty of hiding places.

8. Glowlight Tetra (Hemigrammus Erythrozonus)

The Glowlight Tetra is another hardy Tetra that also comes in two color varieties: an orange variety with black stripes called the Yellow Tetra, and a red variety called the Red Tetra. The Glowlight Tetra is an easy Tetra fish to care for as long as you provide them with clean water and use a sand substrate instead of gravel (Glowlight Tetras will eat small gravel pieces). They grow up to 1.5 inches long and should be kept in schools of 5+ Tetras. They like temperatures around 72°F (22°C) to 82°F (28°C), slightly acidic pH levels from 6.0-7.0, and soft water with a sand substrate.

9. Neon Tetra (Paracheirodon Tetra)

The Neon Tetra is a small Tetra that contains a neon yellow-green color that shines in the sunlight. Tetras in general are very peaceful and the Neon Tetra is no exception, they like to be kept in groups of 10+ Tetras and do well with non-aggressive tankmates like Corydoras Catfish and Danios. Tetras are typically very hardy and easy to keep as long as they have a proper environment, the Neon Tetra is no different. They grow up to 1.5 inches long and should be kept in soft water with a pH around 6-7 and temperatures between 72°F (22°C) to 82°F (28°C). Tetras are an easy Tetra fish to care for as long as you provide them with clean water, sand substrate rather than gravel, regular small feedings daily, and plenty of hiding places.

10. Zebra Danio/Zebra Fish (Danio rerio)

The Zebra Danio (also known as the Zebra Fish) comes in a variety of colors such as orange, white, and yellow. Tetras in general are very peaceful and also do well when kept with Tetras of similar size and temperament, which makes it easy to care for Tetra fish like the Zebra Danio. Some may grow up to 3 inches long and live around 5-8 years in optimal conditions; Tetras in general have a lifespan of around 3-4 years if properly cared for. Tetras like the Zebra Danio should be kept in schools of 10+ Tetras and need clean water that is soft with a pH from 6-7, temperatures between 72°F (22°C) to 82°F (28°C). Tetras are an easy Tetra fish to care for as long as you provide them with the right environment, food, water conditions, etc.

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