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Edit Osteogaster zygata

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Name

Scientific name

Osteogaster zygata

Described by

Authority Eigenmann & Allen, Year 1942, Bracketed

Family

Callichthyidae

Common names

Black Band Cory

Photograph credits

All 4 credited

Summary

The black band cory, Osteogaster zygata, long known as Corydoras zygatus, is an armoured catfish from the middle Río Marañón watershed in e…

Size and aquarium

Maximum size

70mm, standard length

Aquarium size

Minimum length 90 cm, Minimum depth 30 cm

Water

Water conditions

Temperature 20–26°C, pH 5.5–7.5

Hardness

2–12dGH

Conductivity

Not recorded

Behaviour

Temperament

Peaceful

Social needs

A shoal or group

Community suitability

Community-safe

Where it lives

Countries, regions, rivers and lakes

Ecuador, Peru, Amazon, Bobonaza, Huallaga, Marañón, Pastaza, Pindo, Samiria, Santiago, Ucayali

Writing

Etymology

Corydoras: from the Ancient Greek κόρυς (korus), meaning 'helmet', and δορά (dora), meaning 'skin, hide of an animal', in allusion to the rows of bony plates o…

Distribution

Known from the Ucayali (río Samiria), Huallaga, Santiago, and Pastaza (ríos Bobonaza and Pindo) river systems in eastern Ecuador and northern Peru. These are a…

Habitat

Few details are available, but some collection records suggest that it inhabits smaller tributaries rather than main river channels.

Aquarium size

Minimum base dimensi0ns of 90 ∗ 30 cm are recommended.

Maintenance

Ideally use a substrate of fine sand, although rounded gravel is an acceptable alternative provided that it is kept scrupulously clean. Other décor is largely …

Water conditions

Not written yet

Diet

Corydoras spp. are foraging omnivores and will accept most sinking dried foods, as well as small live and frozen varieties such as chironomid larvae (bloodworm…

Behaviour and compatibility

Peaceful and gregarious. Should be maintained in a group of at least 4-6 individuals.

Where does this come from?

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Sexual dimorphism

Females tend to grow larger, and sexually mature individuals are noticeably broader and deeper-bodied than males.

Reproduction

Can be bred in a similar fashion to many other Corydoras species. Use a ratio of two or more males per female if possible, and when the females are visibly ful…

Notes

Osteogaster zygata is also known as 'zygus cory' in the aquarium trade. The broad dark stripe in the dorsal portion of the body does not extend into the ventra…

References

References

4 on this profile