Poor pairing in a typical community
Tiger Barbs are persistent fin-nippers and this pairing exposes slow or long fins to repeated harassment.
Practical response: Choose robust, fast tankmates without trailing fins, or house the long-finned species separately.
Congo Tetra
- Adult size
- 8.5 cm / 3.3 in
- Tank reference
- 120+ L / 31.7+ US gal
- Group
- 6+
- Zone
- mid
- Temperature
- 23–27°C / 73.4–80.6°F
Tiger Barb
- Adult size
- 7 cm / 2.8 in
- Tank reference
- 90+ L / 23.8+ US gal
- Group
- 8+
- Zone
- mid
- Temperature
- 20–27°C / 68–80.6°F
Water parameter overlap
Behavior and space
A larger active tetra needing open swimming room and a group with a balanced sex ratio. Fast, assertive schooling fish; larger groups help, but long-finned tankmates remain a poor choice.
A compatibility answer should also consider the actual tank dimensions, number of each fish, filtration, planting and other occupants. Two species can be reasonable together in a long, structured aquarium yet become a poor pairing when compressed into a small footprint.
Common questions
Can Congo Tetra live with Tiger Barb?
The StockingLab verdict is avoid: Tiger Barbs are persistent fin-nippers and this pairing exposes slow or long fins to repeated harassment.
Do their temperatures overlap?
23–27°C / 73.4–80.6°F shared range.
Should I trust compatibility calculators completely?
No. Individual behavior, sex ratios, breeding condition, aquascape and tank size can change the outcome. Use the result to identify risks, then verify care requirements before purchase.