

A large, disc-shaped relative of piranhas that eats plants. Difficult care level, perfect for intermediate to advanced fishkeepers. Available with fast UK delivery.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Myleus schomburgki
A large, disc-shaped relative of piranhas that eats plants. Difficult care level, perfect for intermediate to advanced fishkeepers. Available with fast UK delivery.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Maintain these water conditions for optimal health and vibrant colors
The Black Black-Barred Myleus (Myloplus schomburgkii) is a a large, disc-shaped relative of piranhas that eats plants. Originating from Amazon and Orinoco basins, this species brings natural beauty and character to any home aquarium. Best suited for experienced aquarists who can provide the specialised conditions this species thrives in.
| Scientific Name | Myloplus schomburgkii |
| Family | Serrasalmidae |
| Origin | Amazon and Orinoco basins |
| Care Level | Difficult |
| Temperament | Semi-Aggressive |
| Adult Size | 30.0 cm |
| Minimum Tank Size | 500 litres |
| Temperature | 24.0–28.0°C |
| pH Range | 5.5–7.5 |
| Hardness | 2–15 dGH |
| Diet | Herbivore/omnivore; plant matter, fruits, vegetables, occasional protein |
| Lifespan | 15 years |
| Tank Region | Middle |
Myloplus schomburgkii belongs to the family Serrasalmidae. This species is native to Amazon and Orinoco basins, where it inhabits freshwater rivers, streams, and tributaries with varied vegetation.
A minimum tank size of 500 litres is recommended (keep in groups of 5+). Maintain water temperature between 24.0–28.0°C with a pH of 5.5–7.5 and hardness of 2–15 dGH. Peaceful piranha relative that grows large. Will destroy live plants. Needs very large tank. Keep in schools.
Herbivore/omnivore; plant matter, fruits, vegetables, occasional protein. Feed small portions 1–2 times daily, offering only as much as they can consume within a few minutes. A varied diet promotes optimal health and vibrant colouration.
Good companions include Large tetras, Large catfish. Avoid housing with Small fish, Live plants (will eat them). This species has a semi-aggressive temperament and primarily occupies the middle region of the tank.
At Tropical Fish Co, we carefully select and ship healthy, vibrant fish directly to your door across the UK. Every Black Black-Barred Myleus is hand-picked for quality and health. We offer expert care advice, competitive prices, and reliable tracked UK delivery to ensure your new fish arrives safely and settles in quickly.


24–28°C · pH 6.5–7.5 · 2000L

24–28°C · pH 5.5–7 · 60L


24–28°C · pH 7.5–8.5 · 400L


22–26°C · pH 6–7.5 · 150L


24–28°C · pH 7.5–8.5 · 500L

22–26°C · pH 6–7.5 · 30L

24–28°C · pH 7.5–8.5 · 150L

24–28°C · pH 7.5–8.5 · 200L

18–25°C · pH 6–8 · 100L

18–28°C · pH 6.5–8 · 20L

24–27°C · pH 7.5–8.8 · 150L

22–26°C · pH 6–7.5 · 60L