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Devario sp. 'purple cypris'

Authority not recorded

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This specimen has just been introduced to a new aquarium and is exhibiting pale body colouration.
This specimen has just been introduced to a new aquarium and is exhibiting pale body colouration.Choy Heng Wah

Quick facts

Length
45mm SL1.8in SL
Tank base
75 × 30cm30 × 12in
Temp
not recorded
pH
not recorded
Hardness
not recorded

Difficulty4 of 6 measures

Easy

More bars, more demanding.

Space
modest tank
Water
unknown
Temp
unknown
Temperament
peaceful
Social
shoal
Compatibility
community tank

This unidentified species has only appeared in the aquarium trade on a handful of occasions and it has been widely misidentified as Devario jayarami (Barman, 1984). It differs from D. jayarami by possessing 9-10 lateral bars which progressively increase in size posteriorly (vs. 12-13 bars which decrease in size posteriorly), 12 anal-fin rays (vs. 15-16) and a blunter head profile with a lack of convexity behind the head (vs. head profile conical with noticeable convexity behind the head).

Etymology

Devario: appears to be derived from a local vernacular name for the type species of the genus Cyprinus (now Devario) devario Hamilton, 1822.

Aquarium size

Standard length
45mm SL1.8in SL
Aquarium base
75 × 30cm30 × 12in
Volume
~68litres~18US gal

An aquarium with surface dimensions of 75 ∗ 30 cm30 ∗ 12 in or similar should be the smallest considered.

Diet

Almost certain to prey chiefly on insects and their larvae in nature although in the aquarium it's a largely unfussy feeder and will accept most foods.

A good quality dried product can be used as the staple diet but this should be supplemented with regular meals of small live and frozen fare such as bloodworm, Daphnia, Artemia, etc., for the best colouration and conditioning.

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Behaviour and compatibility

This species is peaceful and can be maintained alongside other small, peaceful cyprinids.

Bottom-dwellers could include loaches from genera such as Lepidocephalichthys or Nemacheilus plus catfishes such as Akysis, Hara or Erethistes spp.

Freshwater gobies like Rhinogobius or Stiphodon spp. and many freshwater shrimp should also work.

It's a schooling species by nature and really should be kept in a group of at least 8-10 specimens which will not only make the fish less nervous but result in a more effective, natural-looking display while males will also display their best colours as they compete with one other for female attention.

Sexual dimorphism

Sexually mature females should be rounder-bellied, less colourful and a little larger than males.

Notes

This unidentified species has only appeared in the aquarium trade on a handful of occasions and it has been widely misidentified as Inlecypris jayarami (Barman, 1984).

Specimens examined by Collins et al. (2012) possessed the following characters: barbels absent; snout blunt and round; supraorbital groove present; infraorbital process IO1 absent; lateral line complete; approximately 9-10 lateral bars; fine dark granulation and no stripes on fins.

It differs from D. jayarami by possessing 9-10 lateral bars which progressively increase in size posteriorly (vs. 12-13 bars which decrease in size posteriorly), 12 anal-fin rays (vs. 15-16) and a blunter head profile with a lack of convexity behind the head (vs. head profile conical with noticeable convexity behind the head).

References

  1. Collins R. A., K. F. Armstrong, R. Meier, Y. Yi, S. D. J. Brown, R. H. Cruickshank, S. Keeling, and C. Johnston (2012). Barcoding and border biosecurity: identifying cyprinid fishes in the aquarium trade. PLoS ONE 7(1), e28381

Profile completeness14 of 24

58% complete

Missing: water parameters, hardness, a recorded distribution, taxonomic authority, a common name, distribution, habitat, maintenance, water condition notes, reproduction.