Edit Tucanoichthys tucano

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Name

Scientific name

Tucanoichthys tucano

Described by

Authority Géry & Römer, Year 1997

Family

Characidae

Common names

Not recorded

Photograph credits

All 2 credited

Summary

Tucanoichthys tucano is a miniature characid known only from the rio Uaupés system in the upper Negro basin, Brazil. Adults are less than 1…

Size and aquarium

Maximum size

17mm, standard length

Aquarium size

Minimum length 45 cm, Minimum depth 30 cm

Water

Water conditions

Temperature 20–28°C, pH 4–6.5

Hardness

1–8dGH

Conductivity

Not recorded

Behaviour

Temperament

Peaceful

Community suitability

Not for a community

Where it lives

Countries, regions, rivers and lakes

Brazil, Negro, Uaupés

Writing

Etymology

Tucanoichthys: named for the Tucano Indians which are native to the upper rio Negro and rio Uaupés (Vaupés in Colombia) regions in Amazonas state, Brazil and V…

Distribution

Known only from the rio Uaupés system in Brazil with type locality 'brook emptying into Igarape Yavuari River, tributary of River Uaupés, upper Negro River bas…

Habitat

In 1994 the type locality comprised a 200 metre stretch of a small blackwater creek flowing into the igarapé Yavuari around 20 km upstream of its mouth. The Ya…

In 1994 the type locality comprised a 200 metre stretch of a small blackwater creek flowing into the igarapé Yavuari around 20 km upstream of its mouth.

The Yavuari enters the Uaupés main channel approximately 300 metres downstream of a Tucano village called Açaí.

The creek was 80 – 200 cm31 – 79 in wide and 50 – 120 cm20 – 47 in wide at the time of collection, the end of the dry season, and flowed swiftly though dense forest composed chiefly of Ficus and Leopoldina spp.

There were no aquatic plants but the water was full of dead branches and leaf litter, the latter forming beds up to a metre thick in places, and additional cover was provided by overhanging riparian vegetation.

On 21st February 1994 the water was very clear but heavily-stained with tannins from decomposing organic material.

Air temperature was measured at 29 °C84 °F, while the water was flowing at a rate of 0.5-1 m per second with a temperature of 24 – 26 °C75 – 79 °F depending on depth (surface to 50 cm20 in depth), conductivity 24 µS/cm, pH 4.09 and dissolved oxygen 6.3 mg/l.

Sympatric fish species included Ivanacara adoketa, Crenicichla sp., Amblydoras sp., Rivulus sp. and Poecilocharax weitzmani.

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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.

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DOI

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Year

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Anything worth adding

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Aquarium size

Despite its small size minimum base dimensions of 45 ∗ 30 cm or equivalent are recommended.

Maintenance

Best-maintained in a well-structured set-up, ideally comprising a sandy substrate plus some driftwood roots and branches. The addition of dried leaf litter fur…

Water conditions

Not written yet

Diet

Probably a micropredator feeding on tiny invertebrates and other zooplankton in nature. In the aquarium it will accept dried foods of a suitable size but shoul…

Behaviour and compatibility

Peaceful with other species but does not make an ideal community fish due to its small size and somewhat specialised requirements Ideally it should be maintain…

Sexual dimorphism

Adult males are more intensely-coloured than females with reddish pigmentation in the dorsal, caudal and anal fins. Sexually mature females may appear rounder-…

Reproduction

Has been achieved and in a properly-structured, mature aquarium it's possible that small numbers of fry may start to appear without intervention. Nuptial males…

Notes

This species is not often available and is much sought after in the aquarium hobby. It's currently the only member of the genus and is separated from other cha…

References

2 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