Otocinclus Algae Eater (Cleaning Crew of 4)
These little guys will be all over the tank nibbling on whatever they can find.
Quick Facts
| Scientific Name | Otocinclus affinis |
|---|---|
| Origin | Amazon basin, South America |
| Care Level | Moderate (needs a mature tank) |
| Temperament | Peaceful |
| Adult Size | Up to 2″ |
| Lifespan | 3–5 years |
| Diet | Algae eater (also eats algae wafers) |
| Water Temperature | 72–79°F |
| pH | 6.0–7.5 |
| Group Size | 4 |
FAQ
What kind of algae do these fish eat?
They primarily consume green algae and other plant matter found on glass, rocks, and decorations. Algae wafers are also accepted as a supplement.
Do these fish need a mature tank to thrive?
Yes, they require a mature tank with stable water conditions and established beneficial bacteria to thrive.
Can they live with other fish?
Yes, they are peaceful and can coexist with other non-aggressive species in a well-balanced community tank.

Ava Quinn –
The algae eaters have been in my tank for three months and are very active. They clean the glass and decorations regularly. I didn’t expect them to be so effective. Easy to care for and don’t stress other fish.
Joseph Quinn –
I bought four of these fish for my 20-gallon tank. They seem healthy and are always moving around the tank. I feed them algae wafers once a day and they eat them quickly. Good value for the cleaning they provide.
Jane Fraser –
These fish are small but very helpful. They keep the algae under control without causing any disturbances. I’ve had them for six weeks and they’ve adapted well to the water parameters.