Edit Parosphromenus opallios

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Name

Scientific name

Parosphromenus opallios

Described by

Authority Kottelat & Ng, Year 2005

Family

Osphronemidae

Common names

Not recorded

Photograph credits

All 2 credited

Summary

Parosphromenus opallios is a liquorice gourami endemic to Central Kalimantan province in Indonesian Borneo, in the Arut and Benipah river s…

Size and aquarium

Maximum size

30mm, standard length

Aquarium size

Minimum length 40 cm, Minimum depth 20 cm

Water

Water conditions

Temperature 22–28°C, pH 3–6.5

Hardness

1–4dGH

Conductivity

Not recorded

Behaviour

Temperament

Species tank only

Community suitability

Not for a community

Where it lives

Countries, regions, rivers and lakes

Indonesia, Borneo, Arut, Benipah

Writing

Etymology

Parosphromenus: from the Latin para, meaning 'beside', and the generic name Osphromenus. opallios: from the Greek opallios, meaning 'opal', a gemstone which ca…

Distribution

Endemic to Central Kalimantan (Kalimantan Tengah) province, Borneo, Indonesia although the full extent of its range remains somewhat unclear. Initial collectio…

Habitat

A stenotypic inhabitant of peat swamp forests and associated blackwater streams, in some of which it occurs sympatrically with the congener P. linkei. In unalt…

A stenotypic inhabitant of peat swamp forests and associated blackwater streams, in some of which it occurs sympatrically with the congener P. linkei.

In unaltered habitats the dense canopy of branches above means very little light penetrates the surface of such environments, and riparian vegetation also tends to grow thickly.

The water is typically stained darkly with humic acids and other chemicals released by decaying organic materials, the dissolved mineral content generally negligible and pH as low as 3.0 or 4.0.

Unfortunately in many cases it now survives only in remnants of heavily-modified peat swamps such as irrigation ditches and roadside canals and appears in danger of extinction.

The habitat at Sukumara, at which it occurs sympatrically with the congener P. linkei, comprises a pool with the majority of surrounding vegetation cleared for agriculture and a wooden footbridge constructed across it.

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Where does this come from?

My own experienceFor example, I've kept twelve in a planted 60 cm tank since March 2024.A website I sawFor example, an IUCN Red List assessment, a museum catalogue or a FishBase page.A paperFor example, Marshall et al. (2011), Water temperature differences in interfluvial palm swamp habitats of Paracheirodon axelrodi and P. simulans.A book, or something not onlineFor example, Tappin (2010), Rainbowfishes: their care and keeping in captivity.Something already on the pageFor example, the Behaviour and compatibility section already says this.

Web address

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DOI

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Title

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Authors

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Year

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Pages

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Anything worth adding

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Aquarium size

An aquarium with base dimensions of 40 ∗ 20 cm or equivalent is sufficient for a pair.

Maintenance

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 …

Water conditions

Not written yet

Diet

This species is chiefly a micropredator feeding on tiny aquatic invertebrates, therefore in the aquarium it must be offered a variety of small live foods such …

Behaviour and compatibility

Not recommended for the general community aquarium for reasons already touched upon. It's care requirements, disposition, and especially conservation status di…

Sexual dimorphism

In males the dorsal, anal and caudal have a black subdistal band bordered marginally by a thin greenish-bluish margin and proximally by a blue iridescent band,…

Reproduction

Normally spawns in small caves or among leaf litter and forms temporary pair bonds with the male solely responsible for egg and brood-care. Parosphromenus spp.…

Notes

This species is sometimes collected and distributed by private aquarists and has appeared in the aquarium trade on a handful of occasions where it was referred…

References

4 on this profile

Name

Scientific name

Described by

Family

Common names

Photograph credits

Summary

Size and aquarium

Maximum size

Aquarium size

Water

Water conditions

Hardness

Conductivity

Behaviour

Temperament

Social needs

Community suitability

Where it lives

Countries, regions, rivers and lakes

Writing

Etymology

Distribution

Habitat

Aquarium size

Maintenance

Water conditions

Diet

Behaviour and compatibility

Sexual dimorphism

Reproduction

Notes

References

References