Edit Opsarius signicaudus
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Name
Scientific name
Opsarius signicaudus
Described by
Authority Tejavej, Year 2012, Bracketed
Family
Cyprinidae
Common names
Not recorded
Photograph credits
All 3 credited
Summary
Opsarius signicaudus is a cyprinid known only from headwater tributaries of the Mae Klong River in western Thailand. It inhabits well-oxyge…
Size and aquarium
Maximum size
100mm, standard length
Aquarium size
Minimum length 120 cm, Minimum depth 45 cm
Water
Water conditions
Temperature 18–26°C, pH 6–8
Hardness
2–12dGH
Conductivity
Not recorded
Behaviour
Temperament
Not recorded
Social needs
A shoal or group
Community suitability
Not for a community
Where it lives
Countries, regions, rivers and lakes
Thailand, Khwae Noi, Khwae Yai, Mae Klong
Writing
Etymology
Opsarius: apparently from an Ancient Greek word meaning 'small fish'. signicaudus: from the Latin signum, meaning 'flag, sign', and cauda, meaning 'tail'.
Distribution
Known only from headwater tributaries within the Khwae Yai and Khwae Noi branches of the Mae Klong River in western Thailand. Type locality is 'Sangklaburi Dis…
Habitat
Inhabits headwaters and similar well-oxygenated, low-to-medium gradient, moderate to fast-moving rivers and streams with substrates of gravel, cobbles, larger …
Aquarium size
Requires a large aquarium with minimum surface area of 120 ∗ 45 cm or equivalent.
Maintenance
The aquarium should ideally be designed to resemble a flowing stream or river with a substrate of variably-sized rocks, sand, fine gravel, and some larger wate…
Water conditions
Not written yet
Diet
Opsarius spp. are predominantly surface-feeders preying on aquatic and terrestrial insects in nature, with some small fishes and benthic invertebrates probably…
Behaviour and compatibility
Unsuitable for the general community due to its environmental requirements, and likely to outcompete or intimidate slow-moving and less bold species at meal ti…
Sexual dimorphism
Nuptial male individuals develop an enlarged chest as they grow, possess more numerous tubercules on the head, are more intensely-coloured than females. Female…
Reproduction
Unrecorded.
Notes
This species may have been exported for aquaria though probably not under the correct name. It can be distinguished from congeners by the following combination…
References
References
5 on this profile