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Redline Rasbora
Rasbora pauciperforata
📍 Southeast Asia
The Redline Rasbora is a small, peaceful schooling fish native to Southeast Asia, known for its distinctive red lateral stripe running along its silver body. These active little fish are perfect for nano and planted aquariums, thriving in groups and adding constant movement and color to the tank. They are hardy and beginner-friendly, making them an excellent choice for community setups.
Care Guide
Diet
Feed high-quality micro pellets, small flake foods, and occasional live or frozen foods such as daphnia and brine shrimp. Redline Rasboras have small mouths and require appropriately sized food. Feed small amounts 2-3 times daily, only what they can consume in a few minutes.
Behavior
Redline Rasboras are active, social fish that spend most of their time in the middle water column searching for food and interacting with their school. They are constantly moving and exploring, displaying natural schooling behavior when kept in groups of six or more. These fish are non-aggressive and make excellent community members.
Breeding
Breeding in captivity is possible but challenging and rarely achieved in home aquariums. They are egg scatterers that require soft, acidic water and dense vegetation or spawning mops to protect eggs. Fry are extremely small and require infusoria or liquid fry food for the first few days.
Tank Mates
Similar size and peaceful temperament; excellent community fish
Comparable size and water parameter requirements; peaceful schooler
Small algae eater that won't compete for food or space
Peaceful and similar water requirements; avoid aggressive individuals
Peaceful invertebrate that helps with algae control
Provides shelter and doesn't require substrate planting
Common Diseases
Ich (Ichthyophthirius multifiliis)
White spots on body and fins, rapid breathing, flashing against objects, lethargy
Increase water temperature to 28-30 C (82-86 F), perform daily water changes, use aquarium salt or commercial ich treatment; maintain good water quality
Fin Rot
Frayed or deteriorating fins, discoloration at fin edges, lethargy
Improve water quality through frequent water changes, remove any sharp decorations, use antibacterial medication if severe; ensure proper nutrition
Bacterial Infection
Redness on body, open sores, cloudy eyes, loss of appetite, lethargy
Perform large water changes, maintain optimal water parameters, use broad-spectrum antibacterial treatment; isolate affected fish if possible
Parasitic Infection
Excessive scratching, visible parasites, weight loss, clamped fins, rapid breathing
Use antiparasitic medication, perform water changes, quarantine infected fish; improve water quality and reduce stocking density
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Quick Facts
- diet
- omnivore - small insects, zooplankton, and plant matter
- lifespan
- 3-5 years
- max size
- 3 cm (1.2 in)
- tank size
- 10 gallons minimum
- temperament
- peaceful
Water it likes
- ph
- 5.5-7.0
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 2-8 dGH
- temperature
- 72–79°F (22–26°C)