Filament vs Rohan barbs?

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eyespot

Piranha
MFK Member
Mar 17, 2007
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Williamstown, MA
My old school of filament has dwindled down to two males and a female so I was looking to replenish it. While searching I couldn’t find anybody with filament barbs in stock but I came across Rohan barbs and after a fair amount of investigation the two species look exactly alike to me. I’m fairly positive they’re separate species but can anybody tell me the difference? My males are about 6 inches and I read Rohans only get to be about 4 inches. Thanks for any help.
 
From simple google searching alone, it looks like the filament barbs have a much shorter mark near the tail that is more of a spot than a stripe.

1646499416796.png
1646499445013.png

Hope this helps.
 
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From simple google searching alone, it looks like the filament barbs have a much shorter mark near the tail that is more of a spot than a stripe.

View attachment 1489366
View attachment 1489367

Hope this helps.
Not much of a difference but I suppose it’s something. I went through a good number of Google images and videos and couldn’t come up with much. Throw in there’ significant sexual dimorphism and the fact they don’t develop their full colors until adulthood it’s hard for me to tell the difference.
 
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