harlequin rasbora
US /ˈhɑːrlɪkwɪn ræsˈbɔːrə/
UK /ˈhɑːrlɪkwɪn ræsˈbɔːrə/
1.
a small, peaceful freshwater fish (Trigonostigma heteromorpha) popular in aquariums, known for its distinctive black, triangular patch on its side and reddish-orange body coloration
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The school of harlequin rasboras added vibrant color to the planted aquarium.
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Keeping harlequin rasboras requires a well-maintained tank with stable water parameters.