Pygmy Rasbora (Boraras maculatus)

Pygmy Rasboras (Boraras maculatus), also called phoenix rasboras, are tiny spotted nano fish that glow with warm oranges and reds in mature planted aquariums.

A shoal looks like drifting sparks above moss carpets—perfect companions for shrimp and other gentle nano species.

They ask for stable soft water and fine foods, then repay you with constant, delicate motion.

Quick care

• Adult size: About 0.5–1 inch
• Temperament: Very peaceful
• Minimum tank size: 10 gallons for 8–10+; planted preferred
• Diet: Micro foods, crushed flakes, baby brine shrimp
• Water: 74–82°F; pH 5.0–7.0; soft water ideal
• Ideal tank mates: Chili rasboras, pygmy cories, shrimp, snails

Frequently asked questions

What tank size do Pygmy Rasbora (Boraras maculatus) need?

A footprint around 18 × 12 inches (about 10+ gallons) suits a school—similar thinking to chili rasboras. Longer planted nanos beat tiny cubes. Mature water only.

How many Pygmy Rasbora (Boraras maculatus) should I keep?

At least eight to ten; larger groups look alive and keep fish bold. Sparse schools hide constantly. Numbers make the spotted pattern readable.

Are Pygmy Rasbora (Boraras maculatus) safe with shrimp?

Yes—excellent Neocaridina companions with mouths too small for adult shrimp. Moss protects shrimplets. Avoid large fish that would eat the rasboras.

What water parameters suit Pygmy Rasbora (Boraras maculatus)?

Soft, acidic to near-neutral water and warm tropical temps in a settled tank. Tannins often help. They’re sensitive to immature aquariums and big swings.

What do Pygmy Rasbora (Boraras maculatus) eat?

Crushed nano foods plus micro live/frozen prey. Variety improves color and condition. Feed tiny portions suited to a nano bioload.

Are Pygmy Rasbora (Boraras maculatus) good beginner fish?

Better as a planted-nano follow-up species than a first fish. Care parallels other Boraras—stable softish water and micro foods. Experienced shrimp keepers usually succeed.