High Fin Banded Shark
High Fin Banded Shark(Myxocyprinus asiaticus) is not a shark at all — it is a member of the family Catostomidae, the suckers, making it more closely related to North American suckers than to any cyprinid ‘shark.’ As juveniles they are among the most visually extraordinary fish available: a dramatically tall triangular dorsal fin that can equal or exceed the body depth, combined with bold black and cream banding, creates an unmistakable silhouette. They are also one of the most dramatic examples of juvenile-to-adult transformation in the hobby.
Feeding & Care Tip:Hikari Mini Algae WafersandHikari Sinking Wafersmake excellent daily staples — this is primarily an algae grazer and bottom feeder. Supplement withHikari Frozen or Freeze-Dried BloodwormsandHikari Frozen or Freeze-Dried Tubifex Worms2–3 times per week for protein. Feed at the substrate level.
⚠ Size Warning:The High Fin Banded Shark grows to3–4 feet (90–120 cm)and can live 25 years. Juveniles are sold at 2–4 inches and are among the most visually striking small fish available. However, within 2–3 years they will require a pond or aquarium of300+ gallons. Purchase only if you have a plan for housing an adult fish. This is a 25-year commitment.
Native to the Yangtze River basin in China — China’s longest river. Listed as asecond-class protected species in Chinadue to habitat loss from dam construction and river modification. The species is potamodromous — migratory within freshwater systems — which means it cannot be bred in standard aquarium conditions. A genome study published in 2021 revealed evidence of whole-genome duplication in this species, contributing to its unique characteristics.
The juvenile-to-adult transformation is one of the most dramatic in freshwater fishkeeping. Juveniles have the tall sail-like dorsal fin and bold black-and-cream banding. As they grow to 12–14 inches, the stripes fade and the dorsal fin reduces. At sexual maturity (around 5–6 years), the transformation is complete:males turn dusty red,females turn deep purple. The adult fish looks almost nothing like the juvenile.
This is a fish that requires absolute honesty with yourself about long-term housing. The 3-4 inch juvenile will need a pond or 300+ gallon system within a few years. The 25-year potential lifespan makes this a generational commitment. For aquarists with appropriate infrastructure — or a plan to transition to a pond — the High Fin Banded Shark is an extraordinary and rewarding fish unlike anything else.
Care & Ideal Parameters
| Difficulty | Moderate — Advanced |
| Temperament | Peaceful — cold water; large tank or pond required |
| Typical Adult Size | 3–4 feet (90–120 cm) |
| Min. Group Size | 2–3 minimum — 300+ gallon or pond as adult |
| Ideal Temp | 55–75°F (13–24°C) |
| Ideal pH | 6.8–7.5 |
| Ideal GH | 5–15 dGH |
| Ideal KH | 3–10 dKH |
| Staple Food | Hikari Mini Algae Wafers; Hikari Sinking Wafers |
| Treat / Supplement | Hikari Frozen or Freeze-Dried Bloodworms; Hikari Frozen or Freeze-Dried Tubifex Worms |
| Origin | Yangtze River basin, China (second-class protected species in China) |
| Notes | Family Catostomidae — a sucker, not a cyprinid shark. Yangtze River, China. Second-class protected species in China. Dramatic juvenile-to-adult transformation: banded juvenile → adult males turn red, females turn deep purple at maturity. Grows to 3-4 feet. 25-year lifespan. Cannot breed in aquariums (migratory spawner). Pond or 300+ gallon required as adult. |
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