ID this Thorny Catfish

[amiidae]

Nemadoras humeralis ?

Fish is abt 2.5in TL.


Thks

[Silurus]

Closer to an

Opsodoras

, I think.

[sidguppy]

the downward saloping snout is more like Nemadoras, for the rest it's tricky
Opsodoras have pointed noses that turn upwards.

maybe wai till it's settled over sand in a tank and wait till it has it's regular color?

some of the Opsodoras and Nemadoras species have unique dark patches or stripes in the fins and the caudal part of the body; but it's likely these are only well visible once the fish is settled.

[amiidae]

Here is a clearer shot taken with my cam.



Currently they are in a floating box under observation before I release them into the tank. Yes, they have a dark patch at the dorsal fin if you look carefully on the lower fish.

[sidguppy]

I think HH is right; the one Opsodoras in the Clog without a pointy nose is

Opsodoras ternetzi

these look a lot like that species

except for the eyes.....the eyes look smaller and round, not large and oval as in O ternetzi

[Bas Pels]

If you put your mouse here

Opsodoras ternetzi

the fish does seam to be quite a bit smaller then the OP's fish

Other fish there look to be larger, and their eyes match the OP's fish much better

[sidguppy]

but the OP told in his first post that the fish in question are 2.5" TL; that's about 6 cm or so.

which is small.....
Opsodoras ternetzi reaches past twice that size, so it shouldn't have small round eyes at 2.5"

the ones in the Clog are bigger than 2.5", especially the last one and likely the first one as well, given the gravel on the floor

[amiidae]

Thanks again for the input, guys.

I wrote to Dr. Mark Sabaj Perez and was told that this is a new species of Nemadoras related to Nemadoras leporhinus.