Betta Breed · Domestic (line-bred morph)
Spade Tail
Caudal fin shaped like a garden spade — less common than halfmoon or crowntail types.
By the WARN Research & Conservation TeamChecked against IUCN Red List & CITES sourcesLast updated
In brief
The Spade tail betta has caudal fin shaped like a garden spade — straight outer edges meeting at a point, less common than halfmoon or crowntail. Its defining trait is distinctive tail geometry with standard solitary heated filtered betta care.
Spade Tail: At a Glance
| Origin | Domestic (line-bred morph) |
|---|---|
| Size | Small (5–7 cm body) |
| Typical size | 5–7 cm (2–2.8 in); spade point visible when tail spread |
| Lifespan | 3–5 years (with excellent care) |
| Fins & colour | Triangular caudal with pointed tip; solid, bi-colour and marble lines. Fin length moderate compared with halfmoons. |
| Temperament | Active, territorial, inquisitive |
| Best suited to | Collectors wanting unusual tail shapes — 19+ litre heated filtered tanks with soft plants and solitary male housing. |
History & Origins
Spade tail selected for pointed caudal outline across colour lines during twentieth-century betta diversification. Less dominant in modern IBC shows than halfmoon. Pet trade occasionally stocks spade tails — welfare identical to common veiltails.
Spade Tail Fun Facts
- Spade tail point should be central without split lobes.
- Sometimes confused with delta tail — spade has sharper point.
- Appears across plakat and longfin lines historically.
- Tail shape stable genetically unlike marble colour shifts.
Spade Tail Common Health Issues
Conditions seen more often in this breed, and how owners and vets help manage them. This is general guidance, not veterinary advice — always speak to your vet.
Fin damage from decor
Tail point catches on sharp objects first.
Care: Smooth tank interior.
Fin rot
Ammonia burns erode pointed caudal tip.
Care: Water changes and treatment.
Constipation from overfeeding
Bloating affects balance in all tail types.
Care: Fast day weekly; quality diet.
Bettas need heated, filtered tanks
Siamese fighting fish are sold in cups worldwide — yet they thrive in heated, filtered five-gallon-plus tanks with enrichment. Better care starts with honest information.
