Description
Betta krataios (commonly known as the Kapuas Betta) is a small, robust labyrinth fish native to the island of Borneo. Its name is derived from the Greek word krataios, meaning "strong" or "sturdy," which refers to its relatively thick body build compared to other members of its group.
🐟 Physical Characteristics
Size: A small species, typically reaching a standard length of 4.5 cm (approximately 1.8 inches).
Coloration: The body is generally yellowish-brown. One of its most identifying features is the iridescent turquoise scales on the opercle (gill cover) when the fish is alive.
Fins: It possesses a rounded caudal (tail) fin. In males, the anal and tail fins may display a brilliant iridescent band, and the fins are generally more extended than those of females.
Distinction: It is often compared to Betta dimidiata but can be distinguished by its rounded tail (whereas B. dimidiata has a spade-shaped or lanceolate tail) and its yellowish body and fins (as opposed to reddish).
🌿 Habitat and Ecology
Origin: It is endemic to the lower Kapuas River basin in West Kalimantan, Indonesia.
Natural Environment: They inhabit shaded forest swamp streams and pools, which can sometimes be only a few centimeters deep. These waters are typically slow-moving or still, soft, and slightly acidic, often filled with dense vegetation and leaf litter.
Breeding: Betta krataios is a paternal mouthbrooder. After spawning, the male carries the fertilized eggs in his mouth for a period of 7 to 12 days (averaging about 9 days) until they hatch and are released as free-swimming fry.
🧪 Aquarium Parameters
For those keeping this species in captivity, the following conditions are generally recommended:
Tank Size: Minimum of 40 liters (approx. 10 gallons) for a pair.
Temperature: 23°C to 27°C (73°F to 81°F).
Water Chemistry: Prefers soft, acidic water (pH 5.0–7.0) but is noted for being relatively tolerant of varying water chemistry if the water is kept clean and well-filtered.
Diet: They are naturally insectivorous, preying on small invertebrates. In an aquarium, they thrive on a varied diet of live or frozen foods like Daphnia, bloodworms, and brine shrimp.
⚠️ Conservation Status
The IUCN Red List currently categorizes Betta krataios as Data Deficient (DD). While specific population trends are not fully documented, like many wild Bettas in Southeast Asia, they face potential threats from habitat loss due to land conversion for agriculture and plantations.
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.



