Edit Opsarius bernatziki
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Name
Scientific name
Opsarius bernatziki
Described by
Authority Koumans, Year 1937, Bracketed
Family
Cyprinidae
Common names
Not recorded
Photograph credits
All 2 credited
Summary
Sold as 'blue hillstream trout', Opsarius bernatziki is a cyprinid from peninsular Thailand and Tanintharyi, Myanmar, south of the Isthmus …
Size and aquarium
Maximum size
90mm, standard length
Aquarium size
Minimum length 120 cm, Minimum depth 45 cm
Water
Water conditions
Temperature 18–26°C, pH 6–7.5
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
Myanmar, Thailand, Sai Buri
Writing
Etymology
Opsarius: apparently from an Ancient Greek word meaning 'small fish'. bernatziki: named for Dr. H. Bernatzik who collected the type series in 1936 and 1937.
Distribution
The precise extent of this species' distribution is unclear. It appears to occur in river systems on both sides of the Tennaserim Hills in Ranong, Phang-nga an…
Habitat
Inhabits well-oxygenated, moderate to fast-flowing rivers and streams with substrates of gravel, cobbles, larger boulders and exposed bedrock, and is absent in…
Aquarium size
An aquarium with minimum surface area of 120 ∗ 45 cm or equivalent should be the smallest considered.
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
Adult females are less-brightly-coloured, tend to grow a little larger and are thicker-bodied than males, especially when gravid. Nuptial males develop orange …
Reproduction
Unreported.
Notes
This species is occasionally available in the ornamental trade and is normally sold as 'blue hillstream trout'. It possesses 6-7 bluish vertical bars on each f…
References
References
8 on this profile