Chili Rasbora

About

The chili rasbora (Boraras brigittae) is one of the smallest fish you'll ever keep, originating from the blackwater peat swamp forests of southern Borneo in Indonesia. Its body is slender and elongate, marked with a rich red coloration and a dark lateral stripe that is often short or broken. A detail that helps separate it from similar lookalikes occasionally mislabeled in the trade. Males competing for female attention develop their most vivid color, making a well-maintained group genuinely impressive to watch. And that word "group" is important: this is a schooling species that really needs to be kept in numbers of at least eight to ten. A lone chili rasbora, or even a small handful, will be nervous and spend most of its time hiding in the plants. Give it companions and it becomes noticeably bolder and more active. Because of its diminutive adult size, it's not well suited to a general community setup where it risks being outcompeted or simply ignored into stress. It does best in a dedicated nano tank alongside other small, gentle species, pygmy corydoras, small rasboras, Otocinclus, or paired with shy anabantoids. Freshwater shrimp of the Caridina and Neocaridina genera also make compatible tankmates. This species is listed as intermediate care, mostly because it appreciates soft, acidic water and benefits from a thoughtful, species-appropriate setup rather than a standard community tank approach.