Margitae tetra
Hyphessobrycon margitae
Also known as Margita's tetra, Bleeding Blue Tetra
FreshwaterFish
Care at a glance
- Temperature
- 72–81°F
- 22–27°C
- pH
- 5.5–7.2
- Adult size
- 1.9 in
- 4.8 cm
- Minimum tank
- 16 gal
- 60 L
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Difficulty
- Medium
- Breeding
- No record
- Rarity
- Common
- Family
- Characidae
- Origin
- Peru
Overview
The Margitae tetra's size and steady schooling make it a good anchor fish for a Peru-themed soft-water display. It is a solid pick for an intermediate keeper.
Did you know
Tetras are still being described from Peru at a steady clip. The Margitae tetra is recent enough that most reference books have not caught up to it yet.
Caring for the Margitae tetra
Keep Margitae tetras in a group of six or more, in a tank of 16 gal (60 L) or larger. A dark-bottomed tank with wood, leaves and gentle flow fits them.
Keep the water soft, at 72 to 81°F (22 to 27°C) and a pH of 5.5 to 7.2. They take flake, granules, and frozen bloodworm or brine shrimp without hesitation. Margitae tetras are peaceful, so choose calm, medium-sized companions.
Good to know
Hyphessobrycon margitae is a characin in the family Characidae and a recent addition to its genus. It grows larger than most of its close relatives. It remains scarce in the hobby, appearing mainly through specialist Peruvian importers, and some shops list it as the bleeding blue tetra.
In the wild
The Margitae tetra comes from soft lowland waters in Peru. It is at home in the dim, tannin-tinted conditions typical of the region's forest streams.
Weekly picks
Tank mates
The Margitae tetra is a peaceful, schooling species that keeps to the middle. These picks share a community profile with it, are safe together in both directions, and overlap on water type, temperature and pH.

Fanning characin
Pyrrhulina rachoviana
Freshwater2 in (5 cm) · 16 gal (60 L)68–79°F (20–26°C)
White spotted rabbit snail
Tylomelania towutica
Freshwater4.3 in (11 cm) · 16 gal (60 L)75–84°F (24–29°C)
Kuhli loach
Pangio kuhlii
Freshwater3.9 in (10 cm) · 17 gal (65 L)72–82°F (22–28°C)
Cardinal tetra
Paracheirodon axelrodi
Freshwater1.8 in (4.5 cm) · 16 gal (60 L)73–84°F (23–29°C)
Spotted splash tetra
Copella nattereri
Freshwater2 in (5 cm) · 16 gal (60 L)75–82°F (24–28°C)
Gold rabbit snail
Tylomelania gemmifera
Freshwater2.8 in (7 cm) · 16 gal (60 L)75–82°F (24–28°C)
Common questions
What size tank does a Margitae tetra need?
A Margitae tetra needs at least 16 gal (60 L). It spends most of its time in the middle.
What temperature and pH does a Margitae tetra need?
A Margitae tetra is comfortable at 72–81°F (22–27°C) with a pH of 5.5–7.2.
What does a Margitae tetra eat?
A Margitae tetra takes flake, granules, and frozen bloodworm or brine shrimp without hesitation.
How big does a Margitae tetra get?
An adult Margitae tetra reaches about 1.9 in (4.8 cm).
Does a Margitae tetra need a group?
Yes. A Margitae tetra is a schooling species and should be kept in a group, not singly.
Related species
2 in (5 cm)17 gal (65 L)72–82°F (22–28°C)Lemon tetra
Hyphessobrycon pulchripinnis
2 in (5 cm) · 17 gal (65 L)
1.8 in (4.6 cm)16 gal (60 L)72–82°F (22–28°C)Itaparica tetra
Hyphessobrycon itaparicensis
1.8 in (4.6 cm) · 16 gal (60 L)
1.8 in (4.5 cm)16 gal (60 L)68–79°F (20–26°C)Mayan tetra
Hyphessobrycon compressus
1.8 in (4.5 cm) · 16 gal (60 L)
1.8 in (4.5 cm)20 gal (75 L)72–82°F (22–28°C)Ornate tetra
Hyphessobrycon bentosi
1.8 in (4.5 cm) · 20 gal (75 L)
1.8 in (4.5 cm)20 gal (75 L)73–82°F (23–28°C)Purple tetra
Hyphessobrycon metae
1.8 in (4.5 cm) · 20 gal (75 L)
1.8 in (4.5 cm)17 gal (65 L)68–82°F (20–28°C)Serpae tetra
Hyphessobrycon eques
1.8 in (4.5 cm) · 17 gal (65 L)
