The Emerald Eye Rasbora is a charming small rasbora reaching only 3.5 cm, making it a true nano aquarium species. Its common name refers to two of its most distinctive features: a vivid emerald-green iridescent spot positioned just above and behind the eye, and a dark ocellated spot at the base of the dorsal fin that becomes particularly visible from certain angles. The body is otherwise silvery to translucent with a faint yellowish lateral stripe. This combination of subtle body coloration and distinctive markings makes it a unique and appealing species in a small school. Native to the slow-moving to gently flowing, soft, and acidic blackwater streams of peninsular Malaysia and Sumatra, the Emerald Eye Rasbora is associated with peat swamp forest habitats and clear forest streams over sandy substrate. In the aquarium it adapts to a range of conditions within its tolerance range, although it shows best coloration and behavior in water on the softer, slightly acidic end of the spectrum. It is entirely peaceful and suitable for planted nano community setups. A school of eight or more allows full observation of its schooling behavior and social dynamics. It is an omnivore that accepts small aquarium foods readily.