Said to be collected in Jambi province, central Sumatra, Indonesia, presumably from the Sentang river (Sungai Sentang), a tributary of the Lalang system around the border with South Sumatra (Sumatera Selatan) province.
Unconfirmed, but presumably inhabits peat swamp forests and associated blackwater streams.
Maximum Standard Length
30 – 35 mm.
An aquarium with base dimensions of 20-40cm or equivalent is sufficient for a pair.
Can be maintained in a fully-decorated aquarium although many breeders prefer not to use a substrate for ease of maintenance.
Driftwood roots and branches can be used and placed such a way that a few shady spots are formed, and clay plant pots, lengths of piping or even plastic camera-film containers can be included to provide further shelter and potential spawning sites.
The addition of dried leaf litter further emphasises the natural feel and as well as offering additional cover for the fish brings with it the growth of microbe colonies as decomposition occurs.
These can provide a valuable secondary food source for fry and the tannins and other chemicals released by the decaying leaves are also considered beneficial for fishes from blackwater environments. Alder cones may also be used for the latter purpose.
Like others in the genus this species does best under fairly dim lighting. You can add aquatic plant species that can survive under such conditions such as Microsorum, Taxiphyllum or Cryptocoryne spp., while floating vegetation, especially Ceratopteris spp., is also useful.
Filtration need not be too strong, with an air-powered sponge filter or similar adequate, and since this species tends to be maintained in pairs (see ‘Behaviour and Compatibility’) a filter may not be required at all provided the fish are not overfed and maintenance is stringent.
The latter must include small weekly water changes of 5-10 % aquarium volume with irregular or larger changes not recommended.
All Parosphromenus spp. require acidic conditions with negligible carbonate hardness and very low general hardness so a reverse osmosis unit or other method of obtaining soft water may need to be employed, and this can be further acidified using phosphoric acid or similar if necessary.
There is no need to use natural peat, the collection of which is both unsustainable and environmentally-destructive.
It goes without saying that these are fishes are sensitive to fluctuating organic wastes and should never be introduced to biologically-immature aquaria.
Temperature: 22 – 28 °C
pH: 3.0 – 6.5
Hardness: 18 – 72 ppm