Head to head
Rainbow Shark vs Barb
Rainbow Shark
VS Barb
The rainbow shark and the barb are both popular cyprinid fish in the aquarium hobby, but they could hardly differ more in temperament, one best kept alone, the other needing a proper school to behave well.
| Rainbow Shark | Barb | |
|---|---|---|
| Scientific name | Epalzeorhynchos frenatum | Puntius and relatives |
| Social structure | Territorial toward its own kind | Schooling, needs groups of six or more |
| Named for | A shark-like fin shape and body outline | The barbels around the mouth |
| Typical size | Moderate | Ranges from tiny to large depending on species |
| Activity pattern | Bottom-dwelling forager | Active open-water swimmer |
| Diet | Omnivore, algae grazer | Omnivore, insects, algae, plant matter |
| Range | A single river basin in Thailand | Fresh water across Africa and Asia |
| Conservation status | Endangered | Least Concern for most popular species |
Rainbow Shark vs Barb: common questions
Should rainbow sharks be kept in groups like barbs?
No, unlike barbs, which are schooling fish that need groups of six or more to stay calm, the rainbow shark is territorial toward its own kind and usually does best as the only one of its type in a tank.
Which is more at risk in the wild, the rainbow shark or the barb?
The rainbow shark, which is Endangered in its native Thailand habitat, while most popular aquarium barbs remain Least Concern and are farmed in large numbers for the trade.
What do the rainbow shark and barb have in common?
Both belong to the cyprinid family, the same broad group that includes carp and goldfish, and both are popular, widely kept fish in the aquarium hobby.