r/Otocinclus

Unfortunate Event

Hey folks - I found one of my 6 ottos on the floor this morning. It jumped out. I was wondering if this is a known issue with ottos. I see these guys get "the zoomies" every once in a while. I am assuming that maybe this happened when it was to high in the tank. I tested the water parameters yesterday and everything was perfect.

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u/f0rgot — 1 day ago

He finally found the cucumber! genius!

Like the Neil Armstrong for the Otos~
the first guy to find the cucumber🎉🎉🎉

u/GravityRainbowJuly — 3 days ago

Are my ottos healthy?

it's been a week since I bought my ottocinclus, they ate all the algae by now, I'm planning on giving them algae wafers and blanched cucumbers, but i just want to know if they are fine for now, do they look healthy and thriving? I have a lot of plants and they swim happily (i think¿) in the center of the tank in the night

u/nes_thechuzzle12 — 2 days ago

Can I add a school of 6-8 to here?

Hi all!
I love otocinclus because I think they look like remoras and I love remoras lol. I want to add a school to my tank but it already has 1 subadult 1 juvenile Bristlenose and 2 Stiphodon Gobys ( Which I think contrary to common belief they are not only herbivorous but omnivorous and loves eating meaty food ). Therefore Im not sure if they can find enough algae.

In our country we only have affinis (But I think it might be vestitus or microspilus or a mix of all those)

I leave my lights open for 9 hours to support algae growth so would they starve here or would they be good given that I will support their diet with algae crisps and cucumbers ?

My tank is 4 month old. It has stable parameters of GH: 7 KH: 5 pH 7.1, Ammonia and Nitrite 0, Nitrate 10ish

u/Adacux — 3 days ago

My otocinclus is hidng

Hello everyone,
I’m a new fish owner and I have five otocinclus and my tank is decently planted. I know it isn’t recommended to have otocinclus as a new fish owner. I however, have repashy and algae wafers. They eat and are grazing. However, I am having a problem, for the past week one of my otocinclus has been hiding. Due to the plants and ceramic hides and driftwood, I can never find him. I can always find all four in a corner together or laying on a plant, but one is nowhere to be found. He used to hide behind a ceramic hide, and the other day he was inside one. What does that mean? Could that mean that I am doing something wrong, is he sick? Could they have ammonia poisoning? Could someone give me a little advice please.

10 gallon
Heater: hygger
Temperature: 77-80 (set to 79)

API water tests from yesterday

1st image:
Ph- 6.0 (i added baking soda off a recommendation)
Ammonia: 0 ppm
Nitrites: 0 ppm
Nitrates:5.0 ppm

2nd image:
Gh: 14
Kh: 5

u/MaleficentNeck5421 — 4 days ago

Advice please!

So I got these guys last week and I have absolutely fallen in love they are my babies. I did lots of research cause eventually I would like to have a betta as the main fish in the tank however unfortunately I let the guy at the aquarium store convince me that I only needed two (I ended up getting three because two didn’t feel right). Should I be prioritising getting three more asap? I would love to hear everyone’s recommendations! Also they are always swimming around near my heater the tank is 26 degrees Celsius so they shouldn’t be cold right? I have been feeding them algae wafers and have tried blanched zucchini. I also am starting to add bacter ae to the tank. I cannot get my hands on repashy where I live so if you have any other suggestions that would be amazing! Tank is 60x30x35 and I had an already used filter to start cycling this tank but still cycled it and let it settle for three months before adding these guys. I just want to do what’s best for them!

u/iridescentspoon — 4 days ago
▲ 5 r/Otocinclus+1 crossposts

Oto Help :(

I had originally purchased 8 Otocinclus from my LFS. 4 have passed away and one more looks to be on his way. Water Paramters-

0/0/30ish (nitrate)
7.0 PH
Temp- 76-77 F

40 gallon breeder planted with almond leaves. All other stock is perfectly healthy. No signs of parasites in any poop from anyone. No visible ICH and everyone is colored.

They aren’t getting bullied. My community is pretty peaceful. I’m just really at a loss why I’m losing them one by one like this.

u/InternationalNeat190 — 3 days ago

Big Ole Oto? Is She Okay?

Hey all, I had 3 otos in my 29g, but recently found a baby so I have 4.

My largest looks a lot extra large now. Is she okay? She seems.. excessive.

u/ferretslinks — 4 days ago

Suitable for an oto family?

This is a 65 Litre tank. It is currently home to only neocardina shrimp. As you can see, it is very densely planted. As you can't see, there's a big bit of driftwood in there, hidden by the pants. Is this tank suitable for otos as it is? Or do I need to cut back plants etc? Anything else glaring?

How many oto would you put in this tank?

It currently has two internal filters running, as well as a heater and an airstone - listing these things because you can't see all of them for the plants!

u/A_little_curiosity — 4 days ago

Happy otocinclus?

Just got 6 otos yesterday and they were a bit frantic but seem to have calmed down today and have been grazing on and off. Any advice to make sure they live through this transition period? Do they look healthy? Thanks

u/moony808 — 5 days ago

Eggs on the way?

Hello everyone!

I hope you’re all doing well!

Is this lovely lady ready to lay her eggs?

Thank you so much in advance!

u/jfvf87 — 4 days ago

Gravid, ill or overfull?

Started keeping otos this year in my community tank. A few have started to join the mix at feeding time depending on what the food is, so I wasn’t sure if this is from overeating a bit or eggs. Mainly want to make sure it’s not a sign of sickness.

u/outlandish_opossum — 8 days ago

Are breeder boxes a useful tool?

So I’m pretty sure my otos will be having babies as soon as the storms come and I want to be prepared. There already was one egg that hatched last time but as soon as the baby hatched it got lost in the big tank and I wasn’t able to keep an eye on the baby so I don’t know why it died. So I wanted to ask if breeder boxes are a useful tool or if it makes the survival rates even smaller than they already are or if feeding becomes easier

u/LoliTamer23 — 9 days ago

Why can’t I keep oto’s

I’ve got a well established tank, with consistent parameters (0 ammonia, 0nitrite, 1-2.5ppm nitrate).

Heavily planted, with good biofilm buildup.

Weekly 15% water changes.

Supplement biofilm with algae pellets, and balanced vegetables.

They’re all active, pea shaped bellies, and don’t appear stressed.

I keep finding them die off after around 4 weeks.

Are these just hard to keep, or am I doing something wrong?

I should note, my other community fish (tetra, guppy and corydoras) have all been fine, haven’t lost a single one since introducing them over the past 6 months.

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u/Defiant-Award2443 — 10 days ago

Ottocinclus

Hi! I hope everyone is having a nice day, I'm here because I have a concern... so i bought some ottocinclus (5 of them) for my 20 gallon long aquarium two days ago but I didn't know that they would be such big POOPERS, i had to do a huge water change yesterday because they pooped a lot the night before, I'm so confused, I mean I think they ate a lot cause I had a lot of algae but I didn't think they would do that much of waste, i have a lot of plants but now i don't know if its gonna be enough to prevent an ammonia spike or a change in the parameters

u/nes_thechuzzle12 — 10 days ago
▲ 42 r/Otocinclus+3 crossposts

New tank! 30g tall

Started up this tank a couple days ago.

It currently has 3 filters.

One that already has media from my other established tank.

I’m definitely going to move my 6 otocinclus catfish and 6 cherry barbs into this tank.

Does anyone have any advice for a new tank, the scape, plants, or other stocking options once it’s all cycled?

u/brightyungho — 12 days ago

Are these Gals gravid?

If they are gravid , approximately how long until eggs arrive?

u/Ripishere — 10 days ago

Beginner looking for info

Hi everyone im looking into getting otos for my 10 gallon what should I know before I do get them and I mean everything from feeding to behaviour even to how many I should get.

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u/NightShade186447 — 12 days ago

Shy skinny ottos- please help

I love my ottos so much but they seem to be struggling in my 15 gal. I have 6 otocinclus in my tank which have cleaned my tank of almost all algae/biofilm aggressively over time, i thought that they would be ok because they actually took very well to algae wafers and veggie supplements but recently theyve gone into hiding and i started to get worried (tank is heavily planted with many hiding spots) but i did a water change today and they came out for the first time in a bit and they looked very thin compared to the past, im not quite sure what to do from here as ive tried to increase algae, it doesnt really work, and im not really sure why their hiding. There is no ammonia/nitrite and nothing has changed in the tank since before they started hiding

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u/Big_Spring5746 — 14 days ago