Dario tigris is a small and attractive species of ray-finned fish in the family Badidae. A relative of the better-known scarlet badis (D. dario), it is found in shallow, slow-moving waters of northern Myanmar. It was originally believed to be a colour form of D. hysginon, but in 2022 it gained species status. It may be found in the aquarium trade.
D. tigris is probably endemic to northern Myanmar and possibly to the state of Kachin, close to the city of Myitkyina. A pair of males from separate localities were included in the type series of D. hysginon with details given as "stream about 1.5 km on road Myitzon-Myitkyina" and "ditch marginal to fish ponds about 40 km north of Myitkyina, on road to Myitzon".
No details are available regarding its habitat, but the possibly sympatric D. hysginon shows a marked preference for small, often murky pools with dense growths of aquatic plants or submerged grasses.
Dario species are micropredators feeding on small aquatic crustaceans, worms, insect larvae and other zooplankton. In the aquarium hobby, it is advised to feed them a varied diet of Artemia nauplii, Daphnia, grindal, microworms, and banana worm.
D. tigris is a substrate spawner forming temporary pair bonds.