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Aplocheilus panchax, adult male left-facing AI illustration; Mainland-India-reference adult male illustration; not armatus or andamanicus

Blue panchax

Aplocheilus panchax

A slender silver-blue fish with a small rear dorsal.

The male is pale silver-olive with blue reflections, a rounded finely spotted tail with a pale-blue submarginal band and yellow-orange lower anal edge.

Adult length
Up to 2.8 cm (standard length, without the tail fin)
Water temperature
20–25 °C
pH
6–8
Hardness
5–12 dGH
Natural habitat
Occupies lowland wetlands, ponds, ditches, estuaries and mangrove creeks, often among dense submerged or floating plants.

Check name and origin before purchase.

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Appearance and identification

Separate it from A. armatus and A. andamanicus; a shared trade name is not enough to confirm identity.

Same-species behaviour

Active at the surface and tends to aggregate.

Space requirements

Keep surface feeding access and refuge, and prevent escape. Do not assume a tiny container suits it because of its small size.

Diet and feeding

Feeds on small larvae in nature. In aquaria offer suitable animal foods; mosquito-control use does not replace feeding.

Compatibility limits

Take care with companion size. Consider small fish, shrimp and food competition individually.

Aquarium environment

A planted display shows its surface behaviour; it may spawn among floating plants.

Sources

doi.org ↗ 2026-10-22

www.fishbase.se ↗ 2026-10-25

treatment.plazi.org ↗ 2026-10-22

en.bdfish.org ↗ 2026-10-22

killis.org.uk ↗ 2026-10-22

api.gbif.org ↗ 2026-10-22

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