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Otocinclus Catfish (Tank-Bred)

Otocinclus Catfish (Tank-Bred)

Regular price $23.95 USD
Regular price Sale price $23.95 USD
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Description

To protect our animals and to ensure they get to our customers healthy, we will only ship orders with Nano Fish via UPS Next Day Air.

Long renowned as the arch nemesis of aquarium algaes, the Otocinclus Catfish (Otocinclus macrospilus) has been eradicating tanks of this nuisance for many years. Their sucker-mouths are perfectly equipped to tackle algae from all surfaces of an aquarium.

The “Otto” or “Otto cats” as they are fondly referred to, are native to South America where they reside in fast-flowing bodies of water. As such, they enjoy aquariums with stronger water flow and good aeration. They are not large fish, maxing out around 2 inches in length. Ottos are recognizable by the mottled variety of darker colors that cover them from head to tailfin. Their skin is a mix of black, gray, and brown hues. Similar to plecos, they have rows of plating running along their bodies.

Despite their relatively shy demeanor, Ottos enjoying being in groups of 6 or more as they are very sociable and and peaceful. Due to their diminutive nature, they are commonly kept with other non-aggressive fish and small invertebrates such as freshwater shrimp, snails, and crabs. Extra care should be taken when acclimating these fish, as they can be sensitive to poor water quality/parameters. 

Being primarily an algae eater, it is best to introduce your Ottos to a well-established tank which has algae and biofilm present. In the event that algae is not readily available in your aquarium, their diet can be supplemented with fresh vegetables (cucumber and zucchini are very popular choices), algae or kelp wafers, and vegetable-based flake food.

Our Tank Water Parameters

PH: 7.2 to 7.5
GH: 7 to 8
KH: 3 to 4
TDS: 180 to 250
Temp: 72 to 75


  • 5 stars: 38 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Aleah M Plumlee
Otos!

They came healthy and adjusted to the tank pretty well!

T
Tieha Foster
Love Ottos

We love our Ottos

B
Bea
They arrived with the ZOOMIES!! All over the tank

They arrived with the ZOOMIES!! All over the tank, finally settling on the front glass---ALL of them! they are now seriously involved in cleaning up the tank...what a bunch of cuties!! As I've been stocking my tank though Shimpy Business I know l'm getting healthy, well bred fish...arriving swiftly once shipped. ~B

J
Jim Hurley
Arrived alive and look great in holding tank

Arrived alive and look great in holding tank eating well with fat little tummy's

E
Ereida Fonseca
Beautiful healthy octo cats

Beautiful healthy octo cats. Came curious and ready to chow down.

J
Julie Tollefson
Well packaged and they are doing

Well packaged and they are doing great!

G
GENENE GREENWELL
Fish arrived active & healthy

Fish arrived active & healthy. They are now thriving in my 40 & 55 gallon tanks

r
river
good fish

Both fish arrived a little stressed but after acclimating are doing great .

J
Jason Roberts
Arrived healthy and happy

They arrived healthy and happy even though I got delayed with work and they sat on the porch for about 4 hrs. As soon as I got home I got them into drip acclimation and zero issues! Beautiful healthy Otto’s!

C
Cristina Potter
Lost one within a few days

Lost one within a few days. After a week the rest are still with us and going strong.

B
Barklee Moses
Very nice

Very nice color

d
david simpson
Arrived quickly and healthy

Arrived quickly and healthy. Have ordered from a few different supplies and so far, I am very impressed with the quality and speed. Will definitely be a returning customer.

M
Mike Akin
These guys arrived packed very well

These guys arrived packed very well. Introduced them to my 10 gallon shrimp tank. They took right to it. Very good addition. Thanks

R
Rosella Ledermann
Cute and Healthy Otos

I got these with an order of Amano shrimp and panda cories. They are just so adorable. I have had them about a month now and they are doing a great job keeping my tank clean. They are so cute to watch swimming and cleaning with each other. Good fish! I would recommend these Otos!

A
Anonymous
Love these little guys

Love these little guys, all survived shipping and have been thriving in my tank!

C
Christina Spence
My order arrived perfectly and the little Otto’s

My order arrived perfectly and the little Otto’s went right to work cleaning my tank!

L
Leila Nassar
Good purchase!

Good purchase! These happy little fellas are cruising around the tank and doing their part to keep things tidy. Would not hesitate to purchase again.

M
Melina Hendrickson
Great addition to my tank!

They were in great shape when they first arrived! It was a chillier day and they even included a heating pad- this gave me a little more peace of mind while I was waiting for them to arrive.
They acclimated to the tank quickly and even get along with my other Octo I got from Petco!
In comparison to the one I already had, these Octos seemed bigger and healthier- they’re audacious enough to even try eating algae off my corey catfish lol! So happy to have these guys in my tank :)

e
emily stevens
Great fish at a great price!

Adorable! I ordered 6 in total, and all immediately felt comfortable in my tank; they even school around with my pepper corydoras! Thank you ♡

e
emily stevens
Perfect packaging!

All arrived happy and healthy! (I ordered 6) They immediately were comfortable in my tank and even school around with my pepper corydoras! So cute; thank you so much ♡

A
Anonymous
Love my little Ottos!

It’s been a week since my Otto’s shipped and they have been doing amazing. They are so fun to watch and such active little creatures!

L
Lana Bongiolatti
Healthy Otocinclus

Healthy Otocinclus. Arrived quickly and all doing well.

M
Mary Gates-Allen
Young healthy well delivered otto cats settling

Young healthy well delivered otto cats settling in well

M
Megan Tramonte
Perfect addition to my

Perfect addition to my tank!

K
Keith DeHaas
The catfish are active and have good coloration

The catfish are active and have good coloration. Seem to be very healthy.

A
Anonymous
arrived alive and healthy

arrived alive and healthy. they're doing really well in their new home.

B
Brittany Hough
Fish were healthy and active

Fish were healthy and active. Really great additions to my community tank. Shrimpy Business is always fantastic, and I am continually impressed by their customer service!

D
Dennis Erb
Favorites

Otocinclus catfish were healthy and well packaged.

A
Aminah Ganem

Bought 3 of these little guys and they came in healthy and ready to go and are still going great in my tank. Would definitely recommend!

A
Asha

I ordered 3 otos for my tank 6 months ago and they are doing great! Shipping was no problem and they have been cruising around keeping my tank clean since. They are fat and happy now. I also noticed they took to algae wafers much easier than my previous otos had - I'm guessing it is because they are tank raised instead of wild caught.

D
Daniel Shannon

Going strong after a couple of weeks. Entertaining and peaceful in a community tank. Seem to be getting larger. I supplement with Repashy or other food with algae in it as they don't eat anything else and they have cleared out all the natural algae. I feel good about only getting tank-raised otos. Wild caught are notorious for poor survival rates in captivity and that's what you find most places. Wish I could accommodate more. Very cool fish.