Fish Database: Slender Harlequin - Trigonostigma espei
Aquarium requirements
Aquarium suitability: 4/5
Sociability rating: 9/10
Area of tank: Middle, all
Aquarium water conditions: 6-7.5, vs,s,m
Temperature: 24 - 28C
Feeding: Flake, frozen, live foods
Minimum tank size: 45cm
Min / Max number in tank: Min 5
Sociability rating: 9/10
Area of tank: Middle, all
Aquarium water conditions: 6-7.5, vs,s,m
Temperature: 24 - 28C
Feeding: Flake, frozen, live foods
Minimum tank size: 45cm
Min / Max number in tank: Min 5
Fish fact file
Family: Cyprinidae (Minnows & Carps)
Synonyms: Rasbora heteromorpha espei, Rasbora espei
Other common names: Lambchop Rasbora
Origin: Asia; Thailand, Cambodia
Natural habitat: Heavily vegetated pools, ponds, and swamps
Size: 4cm
Behavior: Peaceful, shoaling
Breeding: Open water egg scatterers
Natural water conditions: pH 6-6.5, medium
Sexing: Males are thinner and brighter coloured
Synonyms: Rasbora heteromorpha espei, Rasbora espei
Other common names: Lambchop Rasbora
Origin: Asia; Thailand, Cambodia
Natural habitat: Heavily vegetated pools, ponds, and swamps
Size: 4cm
Behavior: Peaceful, shoaling
Breeding: Open water egg scatterers
Natural water conditions: pH 6-6.5, medium
Sexing: Males are thinner and brighter coloured
Fish code No.2704
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The Slender Harlequin is very similar in appearance to the Harlequin but has a narrower body and a smaller dark patch. The Slender Harlequin is very peaceful and only grows to 4cm so is best mixed with other peaceful, small fish. Provide some heavily vegetated areas and hiding spots and avoid mixing with boisterous fish. Water quality must be kept high and whilst the fish may adapt to harder water, over the long term they are best kept in neutral to acidic water with a soft to medium hardness. A good tank mate for timid or sensitive fish.
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