Otocinclus Cats by Tails Fish
Otocinclus spp. are small sucker-mouthed catfish in the same family as the popular Plecos. Otos are renowned for their appetite for algae. They are especially good at cleaning the leaves on aquarium plants and other places that larger cleaning fish can’t get at.
As schooling fish, Otos need to be kept in groups to feel comfortable. We recommend keeping at least 3-4 individuals, although a school of 6-8+ is better. Many very similar species are traded as common Oto Cats; this is most likely O. huaorani.
These are young adults around 1″ long.
| Species | Otocinclus spp. |
|---|---|
| Size | 1 inch (young adults) |
| Behavior | Schooling, algae eaters |
| Recommended Group Size | 3-4 minimum, 6-8+ preferred |
FAQ
What kind of environment do Otocinclus cats need?
Otocinclus cats thrive in a well-planted aquarium with plenty of surfaces for algae growth. They prefer soft water with a neutral to slightly acidic pH and stable temperature. A gentle current is ideal, and they do best in groups.
Can Otocinclus cats live with other fish?
Yes, Otocinclus cats are generally peaceful and can coexist with other non-aggressive community fish. Avoid keeping them with very active or aggressive species that may nip at their fins.
How long do Otocinclus cats typically live?
Please contact customer service
Stewart Nolan –
These little catfish are a great addition to my planted tank. They clean the algae off plant leaves without causing any damage. I have four of them now and they seem very active and calm together. Easy to care for and very effective at keeping the tank tidy.
Harry Terry –
I bought these for my beginner aquarium. They are small and don’t take up much space. After a week, I noticed the algae on my java ferns was significantly reduced. They stay in the back of the tank and don’t bother other fish.
Diana Roberts –
The fish arrived healthy and were already active. I kept them in a 10-gallon tank with a few plants and they immediately started eating algae. I now have a school of six, and they look happy and healthy.