Description
Betta cf. Unimaculata sp. 1898 is more than a striking betta—it's a lineage with a living story, rooted in the remote river drainages of Kalimantan Timur, Borneo. Native to the Kajan (upper River Kayan basin) and Howong (River Mahakam basin) systems, these fish arrive in the aquarium trade with a sense of provenance that dedicated keepers prize as much as their color and presence.
Origin and identity
Each Betta cf. Unimaculata sp. 1898 comes from a distinct locality within East Kalimantan. Rugged habitats and riverine journeys reachable only by small-boat travel contribute to genuine, locality-driven variation. You may notice subtle—and not-so-subtle—differences between Mahakam-derived specimens and other localities such as Sandakan. The collection locality is more than a label—it’s a cue to the fish’s heritage and breeding lineage.
What makes this line stand out
- Locality-driven variation: Different populations express their own colour palettes and patterns, offering a diverse display within the same species.
- Pure bloodlines preserved by locality labeling: Collectors and enthusiasts routinely tag fish with their collection locality to maintain traceable lineages.
- Careful lineage management: Because mixing localities can lead to unpredictable hybridization, Betta cf. Unimaculata sp. 1898 is ideally kept—and appreciated—by maintaining separate populations.
- Remote origin, authentic story: The fish’s origins—from river drainages accessible only by boat—adds depth to any display aquaria and breeding program.
Care and display strategy
To honor the integrity of Betta cf. Unimaculata sp. 1898, plan your aquarium strategy around provenance. Keep fish from the same locality together to preserve authentic traits, and clearly label each tank with its collection locality. This approach safeguards pure bloodlines and makes it easier to track breeding outcomes and color developments over time.
Who this is for
Betta cf. Unimaculata sp. 1898 is ideal for serious hobbyists, dedicated breeders, and display-focused aquarists who value provenance as part of the fish’s appeal. If you enjoy curating authentic lineages and presenting a storytelling element alongside vivid coloration, this species offers a compelling focal point for a well-organized collection.
Practical tips for buyers and keepers
- Request provenance: look for locality tags such as Mahakam or Sandakan to confirm lineage and ensure you’re supporting pure strains.
- Organize by locality: assign separate tanks or partitions for each origin to prevent inadvertent hybridization.
- Document provenance: keep a simple record of where each fish came from, its locality label, and any observed color or pattern changes over time.
- Build a display strategy: create ready-made stories around each locality so observers can appreciate both beauty and origin at a glance.
With Betta cf. Unimaculata sp. 1898, you’re cultivating a living narrative—one that honors Kalimantan’s waterways, showcases unique locality-driven beauty, and invites you to manage lineage with intention. It’s more than a fish; it’s a curated chapter of your aquarium’s history.
Shipping & delivery
LOCAL DELIVERY
1. Delivery within Singapore will be charged at a flat rate of SGD10 per order for standard delivery and SGD10 - 25 per order for express delivery, regardless of the number of items.
2. Local orders above SGD100 will be entitled to FREE standard delivery.
3. Your order will be delivered by courier for livestocks or by registered parcel for plants and accessories.
4. You will receive a notification via email or sms when the order has been dispatched.
5. We are unable to ship orders to restricted locations in Singapore including: Changi Air Freight Center, Changi Airport, Jurong Island, Jurong Port, PSA Terminal Wharves – Tanjong Pagar / Pasir Panjang / Sembawang and MINDEF COMCEN.
6. Your order will be ready for delivery within 3 to 7 working days (Wed or Saturday), orders for livestock will be packed on the same day for the dispatch.
7. In the event of Death on Arrival (DOA), please send clear photo or video of the unopened bag by email within 24 hours. Buyer can opt for a replacement of similar value and make payment for shipping again or request for a refund LESS the costs of delivery / shipping.
TRACKING YOUR ORDERS
- JANIO
- J&T EXPRESS
- LALAMOVE

- UPARCEL
International Shipment
(Shipment of wild bettas only )
Shipment Schedule
IMPORTER Contact Info
1. Orders from overseas will be dispatched directly from our holding facilities to the Exporter.
2. The shipping fee is calculated based on the number of fishes plus the cargo, quarantine costs from our holding facilities to the Exporter and all the way to the Transhipper (Importer).
3. The shipping fee DOES NOT cover the handling and postage fees from Transhipper to your address.
4. Buyers are required to PAY the transhipping fee directly to the Transhipper.
5. You will be notified of the shipment dates available via email.
6. It will take 2-3 days for the order to reach the Exporter, and another 1-2 days for it to arrive at your Transhipper.
7. The Transhipper will then ship the order to you upon receiving confirmation of your preferred shipping date and address.
8. In the event of Death on Arrival (DOA) with the exception of Betta Macrostomas, please send clear photo or video of the unopened bag by email within 24 hours. Buyer can opt for a replacement of similar value and make payment for shipping again or request for a refund LESS the costs of delivery / shipping.
Kindly email us at hello@ivenbetta.com.
Thank you for shopping with us.
Death on arrival (DOA)
In the event of death on arrival, please send a clear photo or video of the unopened bag by email to hello@ivenbetta.com within 24 hours. You can opt for a replacement of similar value (with shipping paid again) or a refund less the delivery / shipping costs.



