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Hi,

I had a doubt on one of my fish...

I bought this one together with others Parotocinclus in my LFS, but this one turned to a brownish coloration, and its really different...

See the picture:



Is it common? I never have seen it again...

Thanks for your help.

Reguards,

That's an Otocinclus of some sort, I think. Will check to verify.

Maybe not. It's a hypoptopomatine of some sort. Pseudotothyris, maybe, but I have not ruled out Pseudotocinclus.

Thanks for your answer Silurus!

But based on what you said that? Do you have any picture that shows this fish?

Reguards,

Here is a picture of Pseudotothyris janeirensis.

Hi!

It looks similar to the fish called Otocinclus sp "Negro" or "Paraguay"....

Cheers
Yann

Hi,

Thanks for your answers. Where can I find pictures of Otocinclus rio Negro, or rio Paraguay???

What is strange is that these two rivers are miles and miles away from each other...Strange...

Why can't it be a Paratocinclus? There's a key for their identification?

Reguards,

It is not likely to be a Parotocinclus because of the color pattern. None of the known species of Parotocinclus have a broad midlateral stripe running from head to tail.

Yann,
The fish commonly listed as Otocinclus sp."Niger" or "Paraguay" is a Hisonotus spp. formerly Microlepidogaster spp.

The fish in the photo doesn't look like a Pseudotothyris spp. in that the dermal scutes are very smooth and uniform, more similar to Otocinclus and Hisonotus. Most of the photos of type specimens I have seen (note "photo of" and not actual specimens) of Pseudotothyris have distinct ridges on the dermal scutes. I have a few slides of Hisonotus spp. (Oto. sp "Niger") that I can scan in.


Sincerely,
Paul E. Turley

Hi guys,

Paul, can you post some of yours slides here for me? Off course only if you think it´s really looks like...

Well, this fish seems to be new... Could it be a new species???

Do you like these fish?

Thanks again,

Heidge wrote:Why can't it be a Paratocinclus?

<I>Parotocinclus</I> has an adipose fin.

Jools