Edit Trigonostigma heteromorpha
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Name
Scientific name
Trigonostigma heteromorpha
Described by
Authority Duncker, Year 1904
Family
Cyprinidae
Summary
The harlequin, Trigonostigma heteromorpha, is a small cyprinid from southern Thailand, Peninsular Malaysia, Singapore and Sumatra. First ex…
Size and aquarium
Maximum size
45mm, standard length
Tank size
Minimum length 60 cm, Minimum depth 30 cm
Water
Temperature and pH
Temperature 21–28°C, pH 5–7.5
Hardness
1–12dGH
Conductivity
Not recorded
Behaviour
Temperament
Peaceful
Social needs
A shoal or group
Community suitability
Community-safe
Where it lives
Countries
Indonesia, Malaysia, Thailand
Supporting text
Etymology
Not written yet
Distribution
Type locality is 'Kuala Lumpur, Selangor, Malaysia', but this species is usually quoted as being native to southern Thailand, Peninsular Malaysia, Singapore, a…
Habitat
Mostly inhabits gently flowing sections of forest streams and tributaries where submerged aquatic plants such as Cryptocoryne species grow thickly. The water i…
Aquarium size
Aquarium base dimensions of 60 ∗ 30 cm24 ∗ 12 in or equivalent should be the smallest considered since this species should be maintained in numbers.
Maintenance
Choice of decor is not especially critical although it tends to show better colouration when maintained in a well-furnished set-up with a dark substrate, and i…
Water conditions
Not written yet
Diet
Stomach analyses of wild specimens have revealed it to be a micropredator feeding on small insects, worms, crustaceans and other zooplankton. In the aquarium i…
Behaviour and compatibility
This species is very peaceful indeed making it an ideal resident of the well-maintained community tank and an unreserved recommendation for those new to fishke…
Sexual dimorphism
Mature females are usually rounder-bellied and often a little larger than the slimmer, more colourful males. An alternative method of sexing is to examine the …
Reproduction
This species exhibits no parental care although it does utilise a different spawning method to most small cyprinids as the eggs are attached to the underside o…
Notes
T. heteromorpha was first exported for aquaria in the early 1900s and has gone on to become one of the most familiar, enduring species in the hobby. It's suffe…
References
References
4 on this profile