Black Harlequin Rasbora Trigonostigma Heteromorpha 2cm

Image for illustration purposes only. Exact colours, patterns, and size may vary between individuals.

£4.00

Delivered alive, guaranteed

Live fish delivery is £20 per order, delivered Thursday, Friday or Saturday, arriving before 1:00pm on the day you choose at checkout. Packed by aquatic specialists and shipped overnight with a dedicated livestock courier, every fish is covered by our Live Arrival Guarantee with automatic refunds. See How Live Fish Delivery Works for full details.

When will my fish arrive?

Order placedDelivery day
Up to Monday 11:00amThursday (that week)
Monday after 11:00am – Tuesday 11:00amFriday (that week)
Tuesday after 11:00am – Wednesday 11:00amSaturday (that week)
Wednesday after 11:00am – Sunday (any time)Thursday (following week)

Black Harlequin Rasbora Tetra Trigonostigma Heteromorpha 2cm Overview: The Black Harlequin Rasbora Tetra, a variant of the Harlequin Rasbora, boasts a striking contrast of deep black and fiery orange hues. Its sleek, elongated body and vivid colors make it an eye-catching addition to any aquarium. Origin: Originating from Southeast Asia, particularly in rivers and forested areas of Thailand, Malaysia, and Singapore, they thrive in slow-moving waters rich in vegetation. Feeding: These tetras are omnivores and readily accept high-quality flake, pellet, and live/frozen foods. Their diet should be supplemented with small live or frozen invertebrates to mimic their natural feeding behavior. Tank Mates: They are peaceful and do well in community tanks. Ideal tank mates include other small, non-aggressive fish such as other rasboras, small peaceful tetras, dwarf corydoras, and peaceful shrimp like cherry shrimp. Aggression: Known for their peaceful demeanor, Black Harlequin Rasboras are non-aggressive and make excellent community fish. They tend to school together, providing a captivating display. Experience Level: Due to their hardiness and undemanding nature, these rasboras are suitable for aquarists of various experience levels, from beginners to seasoned enthusiasts. Water Parameters: Maintain a well-established tank with stable water parameters:
  • Temperature: 72-79°F (22-26°C)
  • pH: 6.0-7.5
  • Hardness: Soft to slightly hard water, around 5-12 dGH

Please Note

The livestock that is sold on our online site is not held in store at our Birchwood Aquatic Centre shop. Species sold at the Birchwood Aquatic Centre physical store may differ from ones available to order to your door.

Frequently Asked Questions

In insulated boxes designed for live transport, packed by aquatic specialists,
overnight with a licensed live-animal courier, arriving before 1pm.

It is covered by our Live Arrival Guarantee.
Photograph it within 4 hours of delivery, email info@birchwoodaquaticcentre.co.uk with your order number, and the refund is processed automatically. The cover continues for 7 days after arrival.


Wednesday, Thursday, Friday and Saturday. You pick your day at checkout; please choose a day someone is home.

Yes. One basket, one checkout; the fish arrive with the specialist courier and the rest of your order ships as normal.

We can deliver to UK mainland only for live fish.

Follow the five-minute acclimatisation steps in our When Your Fish Arrive guide: float the bags, add tank water gradually, net the fish in, lights low, feed tomorrow.