
Sumatran neon loach
A slender violet-brown loach identified by more than a blue sheen.
Live fish can be violet or violet-brown with a subdued blue-violet sheen that varies with lighting. Nasal barbels are separate from the oral barbels. The tail is truncate to slightly notched with a vertical dark base blotch.
- Adult length
- Up to 9.5 cm (standard length, without the tail fin)
- Water temperature
- 21–26 °C
- pH
- 5.5–7
- Natural habitat
- Native to the Batang Hari drainage on Sumatra, Indonesia.
Keep at 21–26°C, pH 5.5–7.0 and KH 2–10 dKH. Originates from the Batang Hari drainage in Sumatra. Reaches 95.4 mm SL.
Appearance and identification
Separated from P. anguillaris by nasal barbels, an anal-fin origin behind the dorsal-fin base and caudal-base pattern in combination. Distinction from P. doriae also uses cheek scales and fin rays. Blue colour alone is not enough. Sumatran neon loach is a trade name, not an artificial fluorescent strain.
Floor and movement space
20 US gallons. Consider the group, the elongated body, cover and feeding access together.
Aquarium environment
Use gentle flow with a planted, sheltered layout, keeping bottom feeding access.
Diet and feeding
Offer small sinking foods plus suitably sized live or frozen animal foods. A micropredator should not depend on leftovers or algae wafers alone.
Same-species behaviour
Keep at least 6 with extensive refuge during acclimation. Check individual condition and feeding.
Compatibility limits
Tiny shrimp or other young animals may be eaten.
Sources
www.fishbase.se ↗ 2026-10-25
www.researchgate.net ↗ 2026-10-23
aquaticarts.com ↗ 2026-10-22
api.gbif.org ↗ 2026-10-22
