Kyburz tetra
Pseudochalceus kyburzi
Also known as Kyburzi tetra, Giant spotted emperor tetra
Care at a glance
- Temperature
- 72–81°F (22–27°C)
- pH
- 5.5–7.0
- Adult size
- 3.1 in (7.8 cm)
- Minimum tank
- 29 gal (110 L)
- Temperament
- Mostly peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Difficulty
- Medium
- Breeding
- No record
- Rarity
- Rare
- Origin
- Pacific-slope streams of Colombia
- Family
- Characidae
Overview
The Kyburz tetra is a large, boldly colored schooling fish that should be kept in a group of at least six, ideally more, to spread out its energy. It is mostly peaceful but pushy: rival males spar with one another, and the fish will nip smaller, slower, or long-finned tankmates, so choose robust, fast-moving companions of similar size and give the tank plenty of space and visual barriers. It swims in the middle of the water and treats feeding as a competition, taking flake, pellets, and frozen or live foods like bloodworm, brine shrimp, and mosquito larvae. Give a group around 110 liters or more, well decorated.
In the wild
Pseudochalceus kyburzi comes from forest streams on the Pacific slope of Colombia, in the wet Choco region rather than the Amazon side of the Andes. Keep it in soft, slightly acidic water from 22 to 27 degrees Celsius at pH 5.5 to 7.0. Provide open midwater for swimming together with structure around the edges, using driftwood, rocks, and planting to create shady retreats and break up lines of sight between rival males.
Good to know
Pseudochalceus kyburzi is a robust characin, family Characidae, reaching about 7.8 centimeters, with pink to turquoise spangling over a wine-red body. It lives on the Pacific side of the Colombian Andes and honors the collector William Kyburz. Breeding is not documented in home aquaria, and like other characins it is an egg-scattering spawner with no parental care.
Did you know
It comes from the Choco, the rain-drenched Pacific coast of Colombia whose fishes seldom cross the Andes into the aquarium trade, which is part of why it stays uncommon.
Tank mates
Kyburz tetra is a mostly peaceful, schooling species that keeps to the middle. These picks match on water type, temperature, pH, size and temperament.

Costae tetra
Moenkhausia costaeFreshwater2.8 in (7 cm)29 gal (110 L)72–82°F (22–28°C)
Niger yellow Congo tetra
Alestopetersius smykalaiFreshwater2.8 in (7 cm)29 gal (110 L)73–81°F (23–27°C)
Bonita tetra
Moenkhausia bonitaFreshwater3.3 in (8.5 cm)29 gal (110 L)72–81°F (22–27°C)
Pacific molly
Poecilia butleriFreshwater2.8 in (7 cm)29 gal (110 L)72–81°F (22–27°C)Highlands rainbowfish
Chilatherina campsiFreshwater3.4 in (8.6 cm)29 gal (110 L)70–81°F (21–27°C)
Neon rainbowfish
Melanotaenia praecoxFreshwater3.1 in (8 cm)29 gal (110 L)73–82°F (23–28°C)
Common questions
What size tank does a Kyburz tetra need?
A Kyburz tetra needs at least 29 gal (110 L). It spends most of its time in the middle.
What temperature and pH do Kyburz tetra need?
Kyburz tetra are comfortable at 72–81°F (22–27°C) with a pH of 5.5–7.0.
How big do Kyburz tetra get?
An adult Kyburz tetra reaches about 3.1 in (7.8 cm).
Do Kyburz tetra need a group?
Yes. Kyburz tetra are a schooling species and should be kept in a group, not singly.
Where to buy
Some links may not be the exact species or variety.
- Imperial Tropicals Freshwater fish and inverts bred at a Florida hatchery
- The Wet Spot Tropical Fish Large selection of quarantined tropical freshwater fish, with live arrival guarantee and Next Day Air flat rate shipping to all US locations
…or ask your local fish store.
Appears in
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Related species

Buenos Aires tetra
Psalidodon anisitsiFreshwater3 in (7.5 cm)25 gal (95 L)66–81°F (19–27°C)
Red eye tetra
Moenkhausia sanctaefilomenaeFreshwater2.8 in (7 cm)28 gal (105 L)72–79°F (22–26°C)
Cachimbo tetra
Hyphessobrycon cachimbensisFreshwater2.7 in (6.8 cm)26 gal (100 L)72–81°F (22–27°C)
Hexastichos tetra
Hyphessobrycon hexastichosFreshwater2.6 in (6.5 cm)24 gal (90 L)72–81°F (22–27°C)
Black widow tetra
Gymnocorymbus ternetziFreshwater2.4 in (6 cm)20 gal (75 L)68–79°F (20–26°C)
Diamond tetra
Moenkhausia pittieriFreshwater2.4 in (6 cm)20 gal (75 L)75–82°F (24–28°C)
