Siamese Algae Eater (Crossocheilus siamensis) SAE 4-6cm
Siamese Algae Eater (Crossocheilus siamensis) SAE brings active grazing behaviour in a suitably large planted aquarium to a suitably prepared aquarium. Plan its home around adult space, water, diet and social needs rather than the current sale size.
Quick Facts
- Scientific name: Crossocheilus siamensis
- Product type: active algae-grazing cyprinid
- Sale size: Approximately 4–6cm as listed
- Sale unit: One individual per quantity ordered unless the listing states otherwise
- Social needs: Active fish whose adult size and group dynamics need planning
| Key Features | Details |
|---|---|
| Size | 4–6cm |
| Species | Crossocheilus siamensis |
| Behavior | Active algae grazer |
| Compatibility | Best in groups; requires adequate space and planted environment |
FAQ
What is the typical adult size of a Siamese Algae Eater?
The adult size of a Siamese Algae Eater typically reaches 4–6cm.
How many Siamese Algae Eaters should I keep together?
It is recommended to keep them in groups of at least 5 to promote natural social behavior and reduce stress.
What kind of environment do they prefer?
They thrive in planted aquariums with moderate water flow and stable water parameters. A well-planted environment supports their grazing habits.

Connor Rees –
The Siamese Algae Eater is a great addition to my planted tank. It actively grazes on algae and doesn’t compete with other fish. I kept a group of five and they seem very comfortable together. The tank looks cleaner now.
Jane Sharp –
I noticed they grow to about 5cm and are active grazers. They do best in a group and need a bit of space. The water quality stays stable with their presence.
Joe Morrison –
After introducing the SAEs, my tank has significantly less algae. They are peaceful and don’t jump or chase other fish. A good choice for a low-maintenance algae control solution.