Do only male BN have retracting spines?

Karl K J · Post by **Karl K J** » 24 Jan 2006, 00:19

i have a male BN (Ancistrus dolichopterus)that has spines that retract from behind its mouth on the side of its head. i have seen only males with them and i have also seen males fight with them over teritory. Do females also have these spines?

Thanks Karl

Post by **Silurus** » 24 Jan 2006, 00:49

http://www.planetcatfish.com/faq/index.php?qid=54

MatsP · Post by **MatsP** » 24 Jan 2006, 11:07

To answer the actual question: Yes, both males and females have these Interopercula Odontodes. The bristles on the front of the head is the main distinction between male and female.

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Mats

Karl K J · Post by **Karl K J** » 25 Jan 2006, 03:31

Thanks for that info.

Thanks Karl