Five Banded Barb
Desmopuntius pentazona
Min Tank Size
60L
Adult Size
5 cm
Lifespan
5 years
School Size
6+
About
Native to the blackwater streams and peat swamps of Southeast Asia, including Borneo, Sumatra, and the Malay Peninsula, Desmopuntius pentazona is one of the more refined barb options available to the hobby. Five bold dark vertical bands cut across a warm golden-orange body, and in good water conditions the base color deepens noticeably, especially on males. They're compact fish, rarely exceeding 5 cm, which makes them practical for mid-sized planted setups without the space demands of larger barb species.
Water chemistry matters more with this species than beginners often expect. They come from soft, tea-stained, acidic environments, and while they'll survive in neutral water for a while, the coloration stays muted and long-term health suffers. 8, soft water with low hardness, and some tannin input from driftwood or leaf litter goes a long way. Temperature can sit comfortably between 24 and 27 degrees Celsius for most setups.
Feeding is easy. They accept quality flake, micro pellets, frozen bloodworm, daphnia, and similar small foods without complaint. A varied diet keeps them active and well-colored.
Behaviorally, these are genuinely peaceful barbs, which sets them apart from their more boisterous cousins. No real fin nipping tendency, no bullying of smaller fish, and they spend most of their time moving actively through the mid column in a loose group. Planted tanks suit them perfectly, and a setup with dense background planting and open midwater swimming space shows them at their best.
If you want to see how other hobbyists have aquascaped around this species, browsing community tank builds featuring D. pentazona is genuinely inspiring.
Water Parameters
Temperature
°CpH
GH
dGHKH
dKHSwimming Level
Flow Preference
Keeping multiple Five Banded Barb together
Five Banded Barb are shoaling fish and need company of their own kind. Keep a group of at least 6. Smaller groups leave them stressed, washed-out in color, and prone to hiding.
Compatibility
Five banded barbs work well with other small, peaceful species that prefer soft and slightly acidic water. Good matches include smaller rasboras like Trigonostigma heteromorpha or chili rasboras, dwarf gouramis, chocolate gouramis if water parameters align, small loaches like kuhlis, and similar-sized tetras. Avoid pairing them with large or aggressive fish that would intimidate them, and steer clear of slow-moving, long-finned species not because the barbs will nip, but because the mismatch in activity level can cause stress in the quieter fish. Adult cherry shrimp are generally fine, but very small shrimp or fresh shrimplets may occasionally be picked at.
Commonly kept with
Species this one is most often paired withCommonly tried but avoid
Often paired, but shouldn't beCare Notes
The most common mistake is keeping these in hard, alkaline tap water and wondering why they look washed out or stay hidden. Soft, acidic water isn't optional for long-term success. A small school in a well-planted tank with driftwood and some leaf litter mimics their natural environment closely enough to make a real difference in coloration and behavior. They're not fragile, but they do reward attention to water chemistry. Filtration should provide gentle flow rather than strong current, since their native habitats are slow-moving or near-stagnant. Standard cycling protocols apply and they're not unusually sensitive beyond the water parameter requirements.
Behavior & Aggression
Five banded barbs are among the least problematic barbs you can keep. They don't establish territories, don't harass tankmates with any consistency, and show no real interest in nipping fins. Intraspecific behavior is calm as long as the school is large enough. A group of fewer than six can become skittish or show low-level chasing between individuals, but it's not damaging aggression. The main thing to watch is opportunistic feeding behavior around very tiny invertebrates, though even this is minor. Keeping them in a proper school and a well-structured tank essentially eliminates any behavioral concerns.
Things to Know
- Needs soft, acidic water to truly thrive and show best color.
- Can pick at very small shrimp or shrimplets opportunistically.
- Requires a school of 6+ or will become shy and stressed.
- Often confused with the similar Six-Banded Barb.
- Colors fade significantly in hard, alkaline water.
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