Freshwater fish wiki
Rasbora Care Guides
Rasboras are a varied group of small, peaceful schooling fish from Southeast Asia prized in community and nano aquariums. Species differ widely in size and requirements, so compare the individual guides before choosing your school.
Species directory
Fish care guides
Choose a species below for care requirements, tank setup, feeding, compatible tankmates and breeding information.
Beginner care
Harlequin Rasbora
Trigonostigma heteromorpha
A classic Southeast Asian schooling fish with a black wedge marking, ideal for roomy planted community aquariums.
- Adult size
- 4–5 cm / 1.5–2 in
- Minimum tank
- 38 L / 10 gal
Intermediate care
Chili Rasbora
Boraras brigittae
A tiny, jewel-red schooling fish from the blackwater habitats of Borneo — perfect for heavily planted nano aquariums.
- Adult size
- 1.5–2 cm / 0.6–0.8 in
- Minimum tank
- 38 L / 10 gal
Intermediate care
Phoenix Rasbora
Boraras merah
A tiny, fiery-coloured rasbora of the Boraras genus that thrives in small, heavily planted nano aquariums.
- Adult size
- 2–2.5 cm / 0.8–1 in
- Minimum tank
- 20 L / 5 gal
Beginner care
Strawberry Rasbora
Boraras naevus
A tiny, colourful Boraras from southern Thailand, best kept as a confident school in a calm nano aquarium.
- Adult size
- 2–2.5 cm / 0.8–1 in
- Minimum tank
- 20 L / 5 gal
Intermediate care
Dwarf Rasbora
Boraras micros
A tiny and peaceful Southeast Asian nano fish — delicate and shy, best appreciated in a calm, heavily planted aquarium.
- Adult size
- 1.5–2 cm / 0.6–0.8 in
- Minimum tank
- 38 L / 10 gal
Beginner care
White Cloud Mountain Minnow
Tanichthys albonubes
A peaceful, cold-tolerant schooling fish from China that suits unheated, well-planted community aquariums.
- Adult size
- 3–4 cm / 1.2–1.6 in
- Minimum tank
- 38 L / 10 gal
Plan your aquarium
Start with the right tank volume
Rasboras need adequate swimming space and should be kept in groups. Use the calculator before planning a new school or community aquarium.
Aquarium volume calculator