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
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