Freshwater Fish
Harlequin Rasbora.
A coppery-orange rasbora marked with a bold black triangle — peaceful, hardy, and beautiful in a tight school. A beginner favorite; a group shoals beautifully in a planted 10-gallon-plus tank with soft water.
In-store purchase only. Live fish, coral, and invertebrates are sold at our Erie store only. They cannot be bought online, and we do not ship live animals under any circumstances.
Live fish are priced per supplier batch — prices may vary. Call to confirm current pricing.
- Condition
- new
- Fulfillment
- Local pickup — Erie, PA
Live animals are sold in store only — we do not ship fish, coral, or invertebrates. Every animal is acclimated and health-checked in-house before it reaches the sales floor. This is a species we carry — it's most likely in the tanks around delivery days, but live stock changes daily. Please call (814) 456-9445 to confirm availability before you drive in.
Care at a glance
What to know before you take one home.
- Care level
- Beginner
- Temperament
- Peaceful
- Community
- Community safe
- Adult size
- 2"
- Min tank size
- 10 gallons
- Diet
- Omnivore
- Scientific name
- Trigonostigma heteromorpha
Good tank mates
Harlequins are peaceful and community-safe, so they're an easy fit for a calm community tank. Great matches are other small, peaceful fish: tetras, other rasboras, corydoras, small peaceful gouramis like honey gouramis, and small livebearers. A few real examples are ember tetras, neon tetras, and bronze cories. Steer clear of fin-nippers like tiger barbs and of larger or aggressive fish, and avoid any tankmate big enough to swallow a small rasbora.
Good to know
The harlequin rasbora is named for the bold black wedge-shaped patch on the rear half of its body.
Stock and individual temperament vary — call (814) 456-9445 for pairing advice before you buy.
Good tankmates
Plays well with.
Species we’d keep in the same tank, with why each pairing works. Stock and individual temperament vary — call (814) 456-9445 to confirm before you buy.
New to stocking a tank? Read our guide on which fish live together.
Neon Tetra
A well-documented peaceful schooling companion with near-identical water requirements (pH 5.0–7.0, 72–77°F). Both species occupy the mid-water column without competing territorially, and multiple authoritative sources confirm this as one of the most natural community pairings for harlequin rasboras.
Bronze Cory
Peaceful, armored bottom-dwellers that share the same soft, slightly acidic Southeast Asian water conditions and occupy an entirely different tank level than the mid-water harlequins. Zero territory overlap, confirmed compatible across multiple care guides.
Rummy-Nose Tetra
A similarly sized, tight-schooling peaceful tetra with compatible water parameters (pH 5.5–7.0, temperature best held at 74–77°F where both species overlap). Both are non-aggressive mid-water schoolers, confirmed compatible by multiple sources.
Cherry Barb
One of the only barb species with no documented fin-nipping tendency. Stays under 2 inches, peaceful, and confirmed by multiple care guides as a safe small-barb companion for harlequin rasboras. Similar water parameter requirements; adequate space and cover recommended as both species use the mid-column.
- K
Kuhli Loach
Both species originate from the same Southeast Asian blackwater streams and share highly compatible parameters (pH 5.5–7.0, 73–77°F overlap). Kuhli loaches are nocturnal substrate-burrowers with no aggression toward mid-water fish, creating a textbook niche separation.
Visit the store
660 East 14th Street,
Erie, PA.
Mon–Fri 12–6 · Sat 11–4 · Sun closed. Call ahead on livestock — what's on the floor rotates.