Edit Danionella priapus

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Name

Scientific name

Danionella priapus

Described by

Authority Britz, Year 2009

Family

Cyprinidae

Common names

Not recorded

Photograph credits

All 3 credited

Summary

Danionella priapus is a miniature cyprinid known only from the Jorai River, a Sankosh tributary in the Brahmaputra drainage of West Bengal,…

Size and aquarium

Maximum size

16mm, standard length

Aquarium size

Minimum length 45 cm, Minimum depth 30 cm

Water

Water conditions

Temperature 18–24°C, pH 6–8

Hardness

1–8dGH

Conductivity

Not recorded

Behaviour

Temperament

Species tank only

Community suitability

Not for a community

Where it lives

Countries, regions, rivers and lakes

India, Brahmaputra, Jorai, Sankosh

Writing

Etymology

Danionella: a diminutive of the generic name Danio, in reference to the tiny adult size of 10-12 mm in this genus. priapus: from the Ancient Greek Πρίαπος (Prí…

Distribution

Known only from the type locality, given as 'India, West Bengal, Jalpaiguri District, Brahmaputra drainage, Jorai River, a tributary of the Sankosh at Laskarpa…

Habitat

Collected from a sluggish stream with clear water, sandy substrate and dense aquatic vegetation (see image #2). Sympatric fish species included Dario dario.

Aquarium size

An aquarium with base dimensions of 45 ∗ 30 cm or equivalent should be the smallest considered.

Maintenance

Should be maintained in a planted set-up with gentle water movement, ideally with a layer of vegetation covering at least part of the surface. Some clumps of T…

Water conditions

Not written yet

Diet

Quite easily-fed despite its delicate appearance. Crushed or very fine-grade dried foods, chopped Tubifex, Artemia nauplii, microworm and sifted Daphnia are al…

Behaviour and compatibility

Given its diminutive size and the fact that breeding should be a priority for anyone interested in keeping it this species is best kept alone. If you do want t…

Sexual dimorphism

Females are noticeably deeper-bodied than males, and when gravid eggs are often visible within the body cavity, while in males the genital opening and anus are…

Reproduction

This species may not have been bred in aquaria although Pete Liptrot and Paul Dixon of the Bolton Museum Aquarium, UK, have achieved great success with an unid…

This species may not have been bred in aquaria although Pete Liptrot and Paul Dixon of the Bolton Museum Aquarium, UK, have achieved great success with an unidentified congener, probably D. translucida. They first noticed fry from their group of 24 adults after moving the school to a dedicated set-up planted with mature Java moss and have since rewarded with regular batches of fry.

The eggs were deposited in individual, cone-shaped masses directly onto the substrate and fry raised using a combination of Paramecium and green water until large enough to accept Artemia nauplii and microworm. A number of spinal deformities were observed in the second generation of fry.

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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

Journal or publisher

Pages

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Anything worth adding

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Notes

This species was referred to as D. sp. 'Jorai River' prior to its description. It can be distinguished from other members of the genus by the following combina…

References

5 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