Antennae length - Sexing shrimp

[Shrimple minded]

I came across a few posts last night on SKF that discuss using shrimp antennae length as a tool to help determine the sex of a shrimp?  I had never heard of this........am wondering if this is still regarded as effective practice?

 

It is noted that this should just be used as a "confirmation" tool to draw a conclusion based on other factors (body shape, curvature), but the general thought process is that:

- males have antennae length ~2x body length

- females have antennae length less than 1.5 times body length (1-1.5x)

 

http://shrimpkeepersforum.com/forum/topic/3412-pics-to-help-sex-shrimp/#comment-3412

http://shrimpkeepersforum.com/forum/topic/5837-sexing-by-antennae/#comment-5837

 

Also noted is difficulty in sexing juvenile shrimp via this method, as their antennae aren't fully formed.

 

Thoughts?

 

[ShrimpP]

Let's go to the "Post Your Shrimp Pics" thread and see if this theory stacks up.

http://www.shrimpspot.com/index.php?/topic/1817-post-your-shrimp-pics/&page=1

 

[EricM]

I have a photo on my FB page about it. I'll try to dig it up.

 

had to go back to jan 2015 to find the photo/link.

 

http://www.shrimpcorner.co.uk/blog/post/14-sexing-freshwater-shrimps

[DETAquarium]

Very interesting. I have never heard of this until now, after looking through a bunch of my pictures I can tell you for certain my females certainly have extremely short antennae.