Bonita tetra
Moenkhausia bonita
Also known as Pretty moenkhausia, Blackbird tetra
FreshwaterFish
Care at a glance
- Temperature
- 72–81°F
- 22–27°C
- pH
- 6.0–7.5
- Adult size
- 3.3 in
- 8.5 cm
- Minimum tank
- 29 gal
- 110 L
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Difficulty
- Easy
- Breeding
- Egg scatterer
- Rarity
- Rare
- Family
- Characidae
- Origin
- Upper Paraguay and Paraná systems, Brazil
Overview
The Bonita tetra is an adaptable, peaceful schooling fish and a good choice for a general community tank. It is easy to keep.
Did you know
Bonita is simply the everyday Portuguese and Spanish word for pretty. It is the kind of plain, direct name a local fisher might give a clean, good-looking little silver fish.
Caring for the Bonita tetra
Keep Bonita tetras in a group of at least eight. They grow larger than many tetras and stay active, so give a group 29 gal (110 L) or more with open swimming room. A sand or fine gravel bottom, driftwood and some hardy plants suit them.
They are not demanding about water. Keep them at 72 to 81°F (22 to 27°C), with a pH of 6.0 to 7.5, moderate hardness and steady, clean flow. They are not fussy about food either. They take quality flake, pellets, and frozen or live foods like daphnia, bloodworm and brine shrimp.
Bonita tetras are peaceful midwater swimmers. Pair them with active companions of similar size, such as other medium tetras, rasboras, peaceful barbs and corydoras. They are egg-scattering spawners, but aquarium breeding is not formally recorded.
Good to know
Moenkhausia bonita belongs to the characin family Characidae. It is a clean silver fish, marked with a dark spot at the base of the tail.
In the wild
The Bonita tetra ranges widely across the Paraguay, Parana, Uruguay and Bermejo basins. It lives in the clear waters of the upper Paraguay and Parana systems of central South America. Its range includes the streams that feed the Pantanal.
Weekly picks
Tank mates
The Bonita 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.

One-spot synodontis
Synodontis notatus
Freshwater9.8 in (25 cm) · 29 gal (110 L)72–81°F (22–27°C)
Redfin halfbeak
Nomorhamphus ebrardtii
Freshwater3.5 in (9 cm) · 29 gal (110 L)75–81°F (24–27°C)
Pacific molly
Poecilia butleri
Freshwater2.8 in (7 cm) · 29 gal (110 L)72–81°F (22–27°C)
Schultz's stone loach
Schistura schultzi
Freshwater4.3 in (11 cm) · 29 gal (110 L)72–81°F (22–27°C)
Silver hatchetfish
Gasteropelecus levis
Freshwater1.4 in (3.5 cm) · 30 gal (112 L)73–82°F (23–28°C)
Highlands rainbowfish
Chilatherina campsi
Freshwater3.4 in (8.6 cm) · 29 gal (110 L)70–81°F (21–27°C)
Common questions
What size tank does a Bonita tetra need?
A Bonita tetra needs at least 29 gal (110 L). It spends most of its time in the middle.
What temperature and pH does a Bonita tetra need?
A Bonita tetra is comfortable at 72–81°F (22–27°C) with a pH of 6.0–7.5.
What does a Bonita tetra eat?
A Bonita tetra is not fussy and takes quality flake and pellets. It also eats frozen or live foods like daphnia, bloodworm and brine shrimp.
How big does a Bonita tetra get?
An adult Bonita tetra reaches about 3.3 in (8.5 cm).
Does a Bonita tetra need a group?
Yes. A Bonita tetra is a schooling species and should be kept in a group, not singly.
How does a Bonita tetra breed?
The Bonita tetra is an egg-scattering spawner. Its breeding in aquariums has not been formally recorded.
Related species
3.4 in (8.7 cm)29 gal (110 L)75–84°F (24–29°C)Heiko's tetra
Moenkhausia heikoi
3.4 in (8.7 cm) · 29 gal (110 L)
3.1 in (8 cm)24 gal (90 L)75–82°F (24–28°C)Green-eye tetra
Moenkhausia chlorophthalma
3.1 in (8 cm) · 24 gal (90 L)
2.8 in (7 cm)29 gal (110 L)72–82°F (22–28°C)Costae tetra
Moenkhausia costae
2.8 in (7 cm) · 29 gal (110 L)
2.6 in (6.5 cm)20 gal (75 L)73–81°F (23–27°C)Napo tetra
Moenkhausia naponis
2.6 in (6.5 cm) · 20 gal (75 L)
2.4 in (6 cm)20 gal (75 L)73–82°F (23–28°C)Cope's tetra
Moenkhausia copei
2.4 in (6 cm) · 20 gal (75 L)
2.4 in (6 cm)20 gal (75 L)73–82°F (23–28°C)Preto tetra
Moenkhausia pretoensis
2.4 in (6 cm) · 20 gal (75 L)
