
Congo tetra
Phenacogrammus interruptus
The showiest tetra; the male trails a feathered tail fringe as he swims.
The Congo tetra (Phenacogrammus interruptus) is a tropical freshwater fish of the family Alestidae. It swims in midwater, close to the bottom. Adults grow to about 8.5 cm. In the aquarium it needs a tank at least 120 cm long and water at 23–27 °C.
- Size
- 8.5 cm
- Smallest tank
- 120 cm
- Temperature
- 23–27 °C
- Care
- Moderate
In the aquarium
Temperature23–27 °C
pH6.0–7.5
Hardness1–12 °dGH
- Temperament
- Peaceful
- Diet
- Omnivore
- Activity
- Busy
- Water layer
- Mid water
- Group
- Happiest in a group of 8 or more
- Plants
- Eats plants
These values are compiled from real species data, and the LumaReef simulation is built to keep them true to life.
Which tank it fits
- Nano60 cm · 65 litresToo small
- Standard90 cm · 180 litresToo small
- Wide120 cm · 300 litres33 of them
- Living room180 cm · 650 litres72 of them
- Showcase250 cm · 1,200 litres133 of them
- Gallery300 cm · 1,440 litres160 of them
Who it lives with
Gets along65 species
- Scissortail rasbora
- Molly
- Dwarf gourami
- Giant danio
- Bronze corydoras
- Black skirt tetra
- Diamond tetra
- Silver hatchetfish
- Pearl danio
- Sailfin molly
- Emperor tetra
- Zebra danio
- Cherry barb
- Platy
- Swordtail
- Cardinal tetra
- Lemon tetra
- Penguin tetra
- Harlequin rasbora
- Black neon tetra
- Glowlight tetra
- Guppy
- Bristlenose pleco
- Lambchop rasbora
Caution21 species
Narrow shared temperature range
Not together13 species
Aggressive with peaceful
Water temperatures do not overlap
These two do not get along
In the wild
- Water type
- Freshwater
- Climate zone
- Tropical
- Habitat
- Midwater, close to the bottom
- Aquarium trade
- Traded commercially
Conservation status
Classification
- OrderCharaciformes
- FamilyAlestidae
- GenusPhenacogrammus
- SpeciesPhenacogrammus interruptus
- Described byBoulenger, 1899
In other languages
- German
- Kongosalmler
- Russian
- Радужная тетра
- Chinese
- 斷線脂鯉
Quick answers
- Congo tetra size: how big does it get?
- Adults reach about 8.5 cm. Record sizes among the 7 Alestidae species on LumaReef: 3.1 cm (Jellybean Tetra) to 133 cm (Goliath Tigerfish).
- Congo tetra tank size: what is the minimum?
- A tank at least 120 cm long. In LumaReef that is the Wide tank or larger.
- Congo tetra water parameters: what does it need?
- Temperature 23–27 °C, pH 6.0–7.5, hardness 1–12 °dGH. Close to what most Alestidae on LumaReef need (22–26 °C).
- Congo tetra tank mates: what can it live with?
- It gets along with 65 of the 99 freshwater species in the catalogue, such as Scissortail rasbora, Molly, and Dwarf gourami.
- Congo tetra: alone or in a group?
- Keep at least 8 together.
- Congo tetra and plants: is it plant safe?
- No, it may eat or uproot plants.
Similar species
Sources
Congo tetra: compiled from these references.









