Sexing C. anthurus

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Reidy

Feeder Fish
MFK Member
Mar 25, 2014
10
0
1
Welland Ontario Canada
I just received 5 juvenile, (4") C. anthurus and I am wondering at what stage would I be able to sex them, and what characteristics I should look for to distinguish male from female.
 
If they are like mine, the females will have the spots going along the dorsal, and a pink belly, they develop around 4 inches. What's the collection point, if you don't mind?
 
I got them from The Wet Spot and they are reported to be from the Rio Meta in Columbia. I will try to post some pictures this evening.
I have a pair from the wet spot too, I don't think they are anthurus though, but I'm no expert.
 
Here are some more pictures taken today. They are supposed to be C. cf anthurus from Rio Meta in Columbia but some doubt exists. Can any of you people with a lot more expertise than me chime in and give me your opinion?
The ocellus at the base of the tail seems to be at odds with any of the anthurus pictures that I have seen.

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