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Hi guys,

Need to tap on your expertise again. I bought 4 of these and I'm not sure if they are simulatus or septentrionalis. Maybe it's not even either of these.



Your advice is greatly appreciated.

Thanks!

Regards,
Benny

Hi,

imo C. simulatus. The fish looks very much like the one pictured in Weitzman & Nijssen's description. Where they imported with C. metae?

Achim

These two species are not the easiest to seperate. C. simulatus has strong serrations on the anterior edge of the pectoral spine.

If your fish were imported mixed in with either C. metae or C. melini then I would go along with them being C. simulatus.

Ian

Hi,

If your fish were imported mixed in with either C. metae or C. melini then I would go along with them being C. simulatus.

The long-snouted Corydoras imported with C. melini are not C. simulatus, but afaik a currently undescribed species. At least in the imports i saw here in Germany.
As Ian mentioned, if the fish are imported with C. metae, you can be sure its C. simulatus.
The differences in colouration are like Ian said not very striking between C. simulatus and C. septentrionalis, but the fish Benny pictures (nice photo btw . looks more like the description Weitzman and Nijssen give forC. simulatus than for C. septentrionalis imo. Unfortunatly there is no really clear feature that distinguishes the two species.

Achim

Hi guys,

Thanks for the comments.

I'm trying to get pictures of the barbels, but the fishes are not cooperative at all. Either they are all over the place or their heads are in riversand. A most agonizing task.

Understand that the babels are different for the 2 species.

Cheers,

The picture below shows the third rictal barbel that it present inthree species C. amapaensis; C. septentrionalis and C. geoffroy


Ian

Hi guys,

I managed to get a reasonable picture of the barbels for identification.



So from the above, do you guys still think it's a c. simulatus?

Cheers,

benny,

Unfortunatly you need to get a side on picture with the barbels lowered. Not an easy task.

I put my fish in a narrow photo tank and placed another piece of glass inside, diagonally from front to back. The fish cannot sit on the bottom and all fins and usually the barbels are fully visible.

Ian

Thanks Ian,

Looks like I have to spend some more time in front of the tank again....side profile with barbels lowered...truly a test of patience and steady hands.

Cheers,
Benny