- Scientific name: Pangio oblonga
- Synonyms: Acanthophthalmus javanicus, Acantophthalmus oblongus, Cobitis oblonga, Pangio javanicus
- Common name: Java Loach
- Group: Loaches
- Habitat: Asia; the island of Java, but also recorded occurences on Sumatra, Borneo and mainland Peninsular Malaysia.
- Size: 8 cm
- Biotope: Lives in shallow forest streams with muddy bottom, among shore vegetation or leaf litter. Usually found near the bottom in sluggish parts of streams.
- Social behavior: Peaceful and shy nocurnal fish. Can be kept in a community tank.
- Diet: Omnivorous; in nature they eat benthic invertebrates. In the aquarium give them small live and frozen foods, and quality dried foods.
- Breeding: Very rare in aquaria
- Tank: Minimum 60 litres
- Population: 5-6 fish for 80 litres
- Decoration: Use a sand or fine gravel substrate. Build lots of shady hiding places with roots and larger stones. Plant dense vegetation and some floating plants. Use dimmed lights, or the species will live concealed.
- Temperature: 23-29 °C
- pH: 3.5-7
- Hardness: 0-8 NK°
- Lifespan: 5-8 years
Description: The body coloration is light brown to reddish brown with a purple iridescence on the gill cover. Their belly is lighter in color. Java Loach have small eyes set high in their skull. Pangio pangia is very similar in appearance, but Pangio oblonga is longer and more slimmer. Java Loaches should not be considered for a new aquarium, they need a well-established, planted aquarium. These fish are best maintained in groups of 5 or more.
Adult females plumper and a little longer than males. In males the first pectoral fin ray is visibly branched and thickened. There are some reports of Java Loach breeding in the home aquarium, but not under controlled conditions.
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