Exclamation Point Rasbora (Boraras urophthalmoides) – Tiny Schooling Fish with Bold Markings
The Exclamation Point Rasbora, also known as Boraras urophthalmoides, is a vibrant nano fish perfect for planted tanks and peaceful community setups. Named for the striking black “exclamation mark” on its tail, this tiny species adds motion and subtle color with its golden body and reddish-orange hues that intensify under good lighting and a dark substrate.
Reaching just 0.75–1 inch at maturity, these rasboras are ideal for nano aquariums, aquascapes, and shrimp tanks. They’re peaceful, hardy when kept in stable conditions, and display natural schooling behavior when kept in groups of six or more.
Key Features:
Scientific Name: Boraras urophthalmoides
Common Name: Exclamation Point Rasbora
Adult Size: ~0.75–1 inch
Shipping size 0.2-0.4 inches
Temperament: Peaceful, shy in small numbers
Swimming Level: Mid to upper water column
Origin: Tank-raised
Lifespan: 3–5 years
Ideal Group Size: 6 or more
Water Parameters:
Temperature: 72°F – 80°F
pH: 6.0 – 7.2
GH: 3 – 8
KH: 1 – 5
Minimum Tank Size: 5 gallons (10+ gallons preferred for larger schools)
Tank Setup:
Heavily planted tank with hiding spots
Gentle filtration and soft lighting
Dark substrate enhances colors
Diet:
Micro pellets or nano fish food
Frozen or live micro foods: baby brine shrimp, daphnia, cyclops
Feed small amounts 1–2 times daily
Great Tankmates:
Shrimp-safe (especially with adult Neocaridina and Caridina)
Peaceful nano species like chili rasboras, CPDs, pygmy corydoras
Avoid larger or aggressive fish
Why Choose the Exclamation Point Rasbora?
Eye-catching tail marking like a punctuation mark
Perfect for nano tanks and planted aquascapes
Peaceful and shrimp-friendly
Schooling behavior brings natural motion to the tank
Hardy and easy to care for in stable conditions
Add subtle beauty and movement to your freshwater aquarium with the Exclamation Point Rasbora—a unique and peaceful nano fish that stands out with its punctuation-mark pattern and effortless grace.
Exclamation Point Rasbora (Boraras urophthalmoides) – Tiny Schooling Fish with Bold Markings
The Exclamation Point Rasbora, also known as Boraras urophthalmoides, is a vibrant nano fish perfect for planted tanks and peaceful community setups. Named for the striking black “exclamation mark” on its tail, this tiny species adds motion and subtle color with its golden body and reddish-orange hues that intensify under good lighting and a dark substrate.
Reaching just 0.75–1 inch at maturity, these rasboras are ideal for nano aquariums, aquascapes, and shrimp tanks. They’re peaceful, hardy when kept in stable conditions, and display natural schooling behavior when kept in groups of six or more.
Key Features:
Scientific Name: Boraras urophthalmoides
Common Name: Exclamation Point Rasbora
Adult Size: ~0.75–1 inch
Shipping size 0.2-0.4 inches
Temperament: Peaceful, shy in small numbers
Swimming Level: Mid to upper water column
Origin: Tank-raised
Lifespan: 3–5 years
Ideal Group Size: 6 or more
Water Parameters:
Temperature: 72°F – 80°F
pH: 6.0 – 7.2
GH: 3 – 8
KH: 1 – 5
Minimum Tank Size: 5 gallons (10+ gallons preferred for larger schools)
Tank Setup:
Heavily planted tank with hiding spots
Gentle filtration and soft lighting
Dark substrate enhances colors
Diet:
Micro pellets or nano fish food
Frozen or live micro foods: baby brine shrimp, daphnia, cyclops
Feed small amounts 1–2 times daily
Great Tankmates:
Shrimp-safe (especially with adult Neocaridina and Caridina)
Peaceful nano species like chili rasboras, CPDs, pygmy corydoras
Avoid larger or aggressive fish
Why Choose the Exclamation Point Rasbora?
Eye-catching tail marking like a punctuation mark
Perfect for nano tanks and planted aquascapes
Peaceful and shrimp-friendly
Schooling behavior brings natural motion to the tank
Hardy and easy to care for in stable conditions
Add subtle beauty and movement to your freshwater aquarium with the Exclamation Point Rasbora—a unique and peaceful nano fish that stands out with its punctuation-mark pattern and effortless grace.
