Copper Congo tetra
Hemigrammopetersius pulcher
Also known as Phenacogrammus pulcher, Copper tetra
Care at a glance
- Temperature
- 73–81°F (23–27°C)
- pH
- 6.0–7.2
- Adult size
- 2.4 in (6 cm)
- Minimum tank
- 24 gal (90 L)
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Difficulty
- Medium
- Breeding
- No record
- Rarity
- Rare
- Origin
- Dja River system, Cameroon
- Family
- Alestidae
Overview
The copper Congo tetra is a schooling fish best kept in a group of at least six, which spreads out the lively sparring that rival males do among themselves and keeps any one fish from being singled out; a good number of females helps. It is peaceful toward tankmates and holds in open midwater, so pair it with other calm community species that occupy different levels. Give it swimming room and gentle flow. Feed a varied diet of quality flake or micropellet with regular small frozen and live foods such as daphnia, brine shrimp, and bloodworm. About 90 liters or more will house a small, settled shoal.
In the wild
The copper Congo tetra is endemic to the Dja River drainage in southern Cameroon, part of the wider Congo basin. It lives in warm, soft, gently acidic forest water flowing over sand and leaf litter under heavy shade. Set it up with driftwood, a dark base, dim lighting, and open midwater to swim in. Keep the water soft and slightly acidic at 23 to 27 degrees Celsius and pH 6.0 to 7.2, with good filtration and regular changes to hold conditions steady.
Good to know
Hemigrammopetersius pulcher is a small alestid of about 6 centimeters, sometimes listed under Phenacogrammus, which is why that name sits in this page's aliases. Its epithet pulcher is Latin for beautiful, a fair label for the warm, burnished copper sheen that gives it its common name. Males are the slimmer, brighter sex, and females are deeper-bodied with a yellow tail. It is rare in the trade, and reliable aquarium breeding is not on record, though it is presumed to scatter eggs.
Did you know
Its scientific name says it plainly: pulcher is Latin for beautiful, chosen for the way a healthy fish takes on the glow of freshly minted copper. It is also genuinely rare, endemic to a single river system in Cameroon.
Tank mates
Copper Congo tetra is a peaceful, schooling species that keeps to the middle. These picks match on water type, temperature, pH, size and temperament.
Bangka rasbora
Rasbora bankanensisFreshwater2.8 in (7 cm)24 gal (90 L)72–81°F (22–27°C)
Cosmops tetra
Bario cosmopsFreshwater2.6 in (6.5 cm)24 gal (90 L)73–82°F (23–28°C)
Ablabes barb
Enteromius ablabesFreshwater3.1 in (8 cm)24 gal (90 L)72–81°F (22–27°C)
Sheepshead swordtail
Xiphophorus birchmanniFreshwater2.8 in (7 cm)24 gal (90 L)68–81°F (20–27°C)Cameroon barb
Enteromius camptacanthusFreshwater3.9 in (10 cm)24 gal (90 L)72–81°F (22–27°C)
Black molly
Poecilia sphenopsFreshwaterBrackish4.7 in (12 cm)24 gal (90 L)70–82°F (21–28°C)
Common questions
What size tank does a Copper Congo tetra need?
A Copper Congo tetra needs at least 24 gal (90 L). It spends most of its time in the middle.
What temperature and pH do Copper Congo tetra need?
Copper Congo tetra are comfortable at 73–81°F (23–27°C) with a pH of 6.0–7.2.
How big do Copper Congo tetra get?
An adult Copper Congo tetra reaches about 2.4 in (6 cm).
Do Copper Congo tetra need a group?
Yes. Copper Congo 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.
…or ask your local fish store.
Appears in
Keeping Copper Congo tetra?
Track water tests, reminders and stocking fit.
Planning tankmates
See how Copper Congo tetra fits a stocking plan. Open the stocking calculator
Add to your site
Show this species on your own site: a shortcode for WordPress, or an HTML embed for anywhere else.
Related species

Altus tetra
Brachypetersius altusFreshwater2.6 in (6.5 cm)30 gal (112 L)73–82°F (23–28°C)
Breuseghem's moon tetra
Bathyaethiops breuseghemiFreshwater2.8 in (7 cm)29 gal (110 L)73–81°F (23–27°C)
Niger yellow Congo tetra
Alestopetersius smykalaiFreshwater2.8 in (7 cm)29 gal (110 L)73–81°F (23–27°C)
Nigerian yellow line tetra
Rhabdalestes septentrionalisFreshwater2.8 in (7 cm)21 gal (80 L)73–82°F (23–28°C)Red comet tetra
Bathyaethiops flammeusFreshwater2 in (5 cm)24 gal (90 L)73–81°F (23–27°C)
Congo tetra
Phenacogrammus interruptusFreshwater3.1 in (8 cm)24 gal (90 L)73–82°F (23–28°C)
