Harlequin Rasboras – 6 Pack or 12 Pack

Harlequin Rasboras are peaceful freshwater schooling fish known for their copper-orange bodies and distinctive black triangular markings. Their active yet gentle behavior makes them an excellent addition to planted aquariums and peaceful tropical communities.

These small fish look their best when swimming together in a properly sized school. Harlequin Rasboras should be kept in groups of at least seven, with larger groups creating a more confident and impressive display.

Available Options

6 Pack
Includes six Harlequin Rasboras. This option is intended for customers adding fish to an existing school.

12 Pack
Includes twelve Harlequin Rasboras and is the recommended option for customers starting a new school.

Schooling Requirements

Harlequin Rasboras are true schooling fish and should not be maintained alone or in very small groups. A group of seven or more helps them feel secure and encourages natural swimming and social behavior.

The 6-pack should be added to an established group containing at least one compatible Harlequin Rasbora. Customers starting a new school should select the 12-pack.

Fish Care

Scientific Name: Trigonostigma heteromorpha
Common Name: Harlequin Rasbora
Family: Cyprinidae
Origin: Southeast Asia
Care Level: Beginner
Temperament: Peaceful
Approximate Adult Size: Up to 2 Inches
Minimum Aquarium Size: 20 Gallons
Recommended Group Size: Seven or More
Water Temperature: 72–81°F
pH: 6.0–7.5
Water Hardness: Soft to Moderately Hard
Diet: Omnivore
Aquarium Level: Middle to Upper
Freshwater Only: Yes

Aquarium Requirements

Provide a fully cycled aquarium with stable water conditions and sufficient open space for schooling. Harlequin Rasboras are particularly attractive in planted aquariums with darker substrate, driftwood, shaded areas, and gentle to moderate water movement.

Plants placed along the back and sides of the aquarium provide security while leaving the center open for group swimming. A secure lid is recommended because these active fish may jump when startled.

Feeding

Harlequin Rasboras are omnivores and readily accept quality tropical flakes, micro pellets, and appropriately sized granules. Supplement their prepared diet with small frozen or freeze-dried foods such as brine shrimp, daphnia, bloodworms, and finely chopped mysis shrimp.

Offer small portions that every member of the school can consume within a few minutes. Remove uneaten food to maintain water quality.

Tank Mates

Harlequin Rasboras are compatible with many peaceful freshwater community species, including:

• Other Harlequin Rasboras

• Small tetras

• Corydoras

• Otocinclus

• Peaceful gouramis

• Small peaceful barbs

• Dwarf shrimp

• Freshwater snails

Avoid large, aggressive, highly territorial, or predatory fish that may chase or eat them.

Acclimation

Keep the aquarium lights dim or turned off during acclimation. Gradually acclimate the fish to the aquarium’s temperature and water conditions, and never add shipping water to the main aquarium.

Introduce the group together whenever possible. Provide a quiet environment and allow the fish time to settle before offering food.

Fish Quarantine

These fish will ship within a 14-day quarantine window, depending on their current stage of quarantine.

Please allow additional processing time before shipment. Tracking information will be provided once the fish have completed preparation and have been transferred to the carrier.

Live-Fish Shipping

Live fish ship by FedEx Priority Overnight for a flat $39.99 livestock shipping charge. Orders containing $300 or more in qualifying live animals receive free live-animal shipping.

Live-animal orders ship Monday through Wednesday to reduce the risk of weekend carrier delays.

Live Arrival and DOA Guarantee

Your fish are protected by our Live Arrival Guarantee. Please inspect all livestock immediately upon delivery.

Any dead-on-arrival claim must be submitted within 12 hours of the carrier-recorded delivery time. Clear photographs showing the affected animal outside of the shipping water must be included with the claim. Please do not discard the animal or its packaging until the claim has been reviewed.

Claims submitted after the 12-hour reporting window or without the required photographs may not qualify for coverage. Please review our complete Live Arrival Guarantee before ordering.

Why Shop With Infinity & Beyond Aquatics?

• Carefully coordinated livestock orders

• Protective insulated packaging appropriate for current weather conditions

• Priority Overnight live-animal shipping

• Live Arrival and DOA protection

• Support with acclimation, compatibility, feeding, and ongoing care

• Personal service from experienced aquarium keepers

Important Livestock Notice

The product photographs are representative of the fish you will receive. Natural size, coloration, pattern, and appearance may vary between individual fish.

These are freshwater fish and must never be placed in a saltwater aquarium.