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Edit Astyanax bimaculatus

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Name

Scientific name

Astyanax bimaculatus

Described by

Authority Linnaeus, Year 1758, Bracketed

Family

Characidae

Common names

Two Spot Astyanax

Photograph credits

All 2 credited

Summary

The two spot astyanax, Astyanax bimaculatus, is a characid ranging from Panama through most of the Amazon and Orinoco basins. It lives in a…

Size and aquarium

Maximum size

150mm, standard length

Aquarium size

Minimum length 120 cm, Minimum depth 60 cm

Water

Water conditions

Temperature 20–28°C, pH 5.5–7.5

Hardness

2–20dGH

Conductivity

Not recorded

Behaviour

Temperament

Peaceful

Social needs

A shoal or group

Community suitability

Community-safe

Where it lives

Countries, regions, rivers and lakes

Argentina, Brazil, Colombia, Ecuador, French Guiana, Guyana, Panama, Peru, Suriname, Trinidad and Tobago, Venezuela, Amazon, Branco, Caquetá, Casiquiare, Huallaga, Içá, Japurá, Jurua, Madeira, Marañón, Morona, Nanay, Napo, Negro, Orinoco, Pastaza, Purus, Tambo, Tapajós, Tigre, Tocantins, Trombetas, Ucayali, Xingu, Yavarí

Writing

Etymology

Not written yet

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Distribution

Type locality is unclear but this species is ubiquitous over a wide range with its distribution extending from Panama throughout the majority of the vast Amazo…

Habitat

Found in a wide variety of biotopes, from swiftly-flowing rivers and streams to ponds, ditches and reservoirs. Many of these display significant seasonal diffe…

Aquarium size

Given its potential size and active nature a tank with base dimensions of no less than 120 ∗ 60 cm or equivalent should be used.

Maintenance

Not critical. As suggested above, it needs plenty of swimming space, so this should be the main priority. Décor can consist of driftwood branches and twisted r…

Water conditions

Not written yet

Diet

Unfussy and omnivorous in nature, existing chiefly on invertebrates and plant material. Live and frozen foods should be offered regularly in captivity, but goo…

Behaviour and compatibility

Not especially aggressive but its adult size and vigorous it's unsuitable for communities containing smaller or very sluggish species. In larger aquaria it cou…

Sexual dimorphism

Females are noticeably round in the belly when full of eggs and a little less colourful than males.

Reproduction

The most success is reported by using a 2:1 ratio of males to females. Little or no lighting is required but add some bunches of fine-leaved plants such as Cab…

Notes

A. bimaculatus is not a popular aquarium fish but is available on occasion exception, most often as a contaminant among shipments of other species. It's identi…

References

References

No references