Horadandia is a genus of tiny carplets in the danio-and-rasbora group, native to southern India and Sri Lanka. At just 1 in long, its species are among the smallest cyprinids anywhere, built for a life in still, densely vegetated pools and slow-moving streams rather than open water. Horadandia atukorali, the green carplet, and Horadandia brittani, the dwarf fire rasbora, make up the genus, both sharing the slender, translucent body typical of very small rasbora-type fish.
The genus draws interest mainly from specialist nano-fish and rasbora keepers, who value its diminutive size and schooling behavior in small, densely planted aquascapes, though it is far less widely available in the trade than mainstream dwarf rasboras. Horadandia atukorali is currently assessed Vulnerable, reflecting pressure on the lowland wetland habitat it depends on across its native range, while Horadandia brittani has not yet been formally evaluated.