i think there are different strains, but not sub species but im unsure, pm inchworm and ask her.
but to my knowledge all the same L number
ok after doing quite a bit of reading i'v gathered there are over 50 sub species of the Ancistrus species, the 'common bristlenose' is impossible to identify as a specific sub species of the Ancistrus group so is known as simply Ancistrus Sp or L032 - this is the fish i breed. The most readily available specific species are the Ancistrus Dolichopterus, i've read that this is L183, there seems to be a lot of confusion between that and Ancistrus hoplogenys which is L182, in the common market. I can't believe i've never read into this before, it really is facinating, wikipedia has a fantastic list of all the L numbers, here is the link if your interested:
[URL="http
/en.wikipedia.org/wiki/L-number"]http
/en.wikipedia.org/wiki/L-number[/URL]
i feel relieved to have cleared that up

And now i know exactly which fish i breed