Three Spotted Dwarf Rasbora

Boraras micros

Three Spotted Dwarf Rasbora is a peaceful all-zone swimmer. Keep in a loose group of 8+.

PeacefulAll-zone swimmerKeep in a loose group of 8+Beginner – Intermediate

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Quick facts

Adult size: ≤ 0.5" (≤ 1.3 cm)
Aquarium size: 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
Care level: Beginner – Intermediate
Temperament: Peaceful
Swimming zone: All-zone swimmer
Temperature: 68–82°F (20–28°C)
pH: 6–7
GH: 2–10 dGH
Diet: Omnivore
Lifespan: up to 5 years
Group behavior: Keep in a loose group of 8+

Care requirements

Care level: Beginner – Intermediate.

Lifespan: up to 5 years.

Aquarium size and space needs

Minimum aquarium size: 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length. Plan the layout and stocking within that limit.

Water parameters

Suitable water: temperature 20–28 °C, pH 6–7, GH 2–10 dGH.

Temperament and compatibility

Three Spotted Dwarf Rasbora is peaceful and suits calm community fish.

Swimming zone and behavior

This fish uses multiple areas of the aquarium, so leave enough open swimming space for movement and feeding.

Feeding

As an omnivore, Three Spotted Dwarf Rasbora should receive a varied diet rather than one repeated food type.

Provide tiny live/frozen foods regularly; suitably-sized dry feed only as a supplement.

Before adding this fish

Plan for an aquarium of 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length.
Avoid aggressive or highly competitive fish.
Keep in a loose group of 8+.
Offer a varied diet suited to this species’ documented feeding habits.

Natural habitat and origin

Origin: Thailand.

Similar fish profiles

Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.

African Banded Barb Barbus fasciolatus Same family Similar care level Same temperament Beginner – Intermediate ≤ 2.4" (≤ 6 cm) 68–79°F (20–26°C) Bandula Barb Pethia bandula Same family Similar care level Same temperament Beginner – Intermediate ≤ 1.6" (≤ 4.1 cm) 72–79°F (22–26°C) Black Ink Barb Barbodes bunau Same family Similar care level Same temperament Beginner – Intermediate ≤ 2.4" (≤ 6 cm) 75–82°F (24–28°C) Black Ruby Barb Pethia nigrofasciata Same family Similar care level Same temperament Beginner ≤ 2.2" (≤ 5.5 cm) 68–81°F (20–27°C) Blacknose Butterfly Barb Enteromius candens Same family Similar care level Same temperament Intermediate ≤ 1.4" (≤ 3.5 cm) 63–75°F (17–24°C) Black Barred Danio Danio absconditus Same family Similar care level Same temperament Beginner – Intermediate ≤ 2" (≤ 5.2 cm) 63–79°F (17–26°C)

FAQ

How large does Three Spotted Dwarf Rasbora get?

Three Spotted Dwarf Rasbora reaches ≤ 0.5" (≤ 1.3 cm).

What aquarium size does Three Spotted Dwarf Rasbora need?

Use an aquarium of at least 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length.

Is Three Spotted Dwarf Rasbora peaceful?

Yes. Three Spotted Dwarf Rasbora is recorded as peaceful and is best planned with calm community fish that do not harass it or dominate the feeding area.

What temperature is suitable for Three Spotted Dwarf Rasbora?

Keep it between 20 to 28 °C.

Should Three Spotted Dwarf Rasbora be kept alone or in a group?

Three Spotted Dwarf Rasbora: Keep in a loose group of 8+.