The black-stripe minnow (Galaxiella nigrostriata) is a small freshwater species of fish in the family Galaxiidae.

It is endemic to southwestern Australia where it is found in slow-running streams, ponds, swamps and ditches.

The black-stripe minnow is found in the South West region of Western Australia between the towns of Augusta and Albany, and from three separate populations near Bunbury, at Melaleuca Park just north of Perth, and at Lake Chandala north of Muchea.

[3][4][5] Most commonly known to inhabit ephemeral water sources as it is capable of aestivating in summer in the damp substrate.

Also found in a range of conditions from slow-flowing rivers, swamps, freshwater lakes and pools, and road side ditches.