CompatibilityBoraras brigittae is a peaceful schooling fish kept in groups of 8–10 (preferably 15–20). Good tank mates include other dwarf species: Microdevario, Sundadanio, Danionella, Trigonostigma, dwarf corydoras, otocinclus, small Caridina and Neocaridina shrimp, and shy anabantoids (Sphaerichthys, Parosphromenus, small Betta). Large, aggressive, or fast fish (barbs, cichlids, large tetras) are unsuitable as they will stress or prey on Boraras. Plants and dense vegetation are essential for comfort.
Plant safetySafe
Plant-eating behaviourIt does not eat plants: in nature, Boraras brigittae is a micropredator feeding on small insects, worms, crustaceans, and zooplankton. In the aquarium, it does not damage live plants, making it safe for planted tanks and nano aquariums; plant matter in feed is not a sign of plant-eating.
Interaction with invertebratesBrigitte's Rasbora is safe for small adult shrimp (Neocaridina, Caridina, cherry shrimp, crystal shrimp) and snails, and is often recommended as a tankmate in shrimp tanks. As micro-predators, they may hunt small fry and larvae and are not suitable when shrimp juveniles or larvae need to be preserved — they can eat shrimp fry/larvae. Large predatory shrimp (macrobrachiums) should not be kept with them, as they prey on the fish.
Incompatible groupsAvoid keeping with large, fast, or aggressive fish that might perceive Brigitte's Rasbora as live food; also unsuitable are species that create strong currents or require alkaline water. Due to its miniature size and shyness, the species is not suitable for common tanks with active medium and large cichlids, barbs, and similar fish.