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FishbeginnerFreshwater

Phoenix Rasbora

Boraras merah

AnimaliaChordataActinopterygiiCypriniformesCyprinidae

📍 Borneo, Indonesia

Ask Finn

A stunningly coloured micro rasbora with a deep red body and dark lateral markings. One of the best nano fish available, it schools tightly and looks spectacular against dark substrates and green plants. Extremely peaceful.

Size0.8"
Min Tank5g
School8+
peaceful
Zonemid

Care Guide

Diet

Phoenix Rasboras are omnivores that thrive on a varied diet of high-quality micro pellets, crushed flakes, and small frozen foods like brine shrimp and daphnia. Feed small portions once daily, offering only what they can consume in 2-3 minutes. Supplement occasionally with blanched vegetables like spinach to ensure balanced nutrition.

Behavior

These tiny, schooling fish are most active and vibrant when kept in groups of at least 8, displaying their brilliant red-orange coloration and engaging in constant foraging behavior. They are peaceful and prefer mid-water zones, rarely venturing to the substrate or surface. They exhibit minimal aggression toward other species and spend most of their time in coordinated group movement.

Breeding

Breeding Phoenix Rasboras in captivity is challenging and rarely achieved in home aquariums. They require very soft, acidic water (pH 4.0-5.5), dense vegetation for egg scattering, and pristine water conditions with frequent water changes. Fry are extremely small and difficult to rear, requiring infusoria and microscopic foods for the first weeks.

Common Diseases

Ich (White Spot Disease)

Symptoms

White spots on body and fins, rapid gill movement, lethargy, rubbing against objects

Treatment

Increase temperature to 28-30°C, perform daily 25% water changes, use aquarium salt (1 tsp per 5 gallons) or commercial ich treatment; treat for 7-10 days

Fin Rot

Symptoms

Frayed or deteriorating fins, discoloration at fin edges, lethargy

Treatment

Perform 50% water change immediately, improve water quality with frequent changes, use antibacterial medication if severe; remove any sharp decorations

Bacterial Infection

Symptoms

Cloudy eyes, open sores, loss of appetite, color fading, torn fins

Treatment

Perform daily 25% water changes, maintain pristine water conditions, use broad-spectrum antibiotic treatment; isolate severely affected fish if possible

Velvet Disease

Symptoms

Fine golden or rust-colored dust on body, rapid gill movement, scratching, lethargy

Treatment

Increase temperature to 28-30°C, perform daily water changes, use copper-free velvet treatment; darken tank to reduce stress

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Quick Facts

diet
Micro omnivore – micro pellets, crushed flake, baby brine shrimp
lifespan
2–4 years
max size
2 cm (0.8 in)
tank size
5 gallons minimum
school size
10+
temperament
Peaceful, schooling

Water it likes

ph
5.0–7.0
ammonia
0 ppm
nitrate
<20 ppm
hardness
1–8 dGH
temperature
72–82°F (22–28°C)

Stats

Community tips0
Kept by0 hobbyists