PlanetCatfish.com

Wondering are all L-95 (Pseudorinelepis) avaliable around all male? Does female have orange fins and cheek too? Any sexual dimorphism?

Watch out that you not mistake the L152 with the L095 in the store, the dealer may sell them like L095, but is can be the L152.


greatings, W@lter

Nope, I am talking about all the orange tail & cheek big L-95. Are they all male?

I have never heard of sexual dimorphism in this species, nor its relative Rhinelepis (which has received slightly more research). If they are non-guarders like Rhinelepis, I would guess there isn't any; the sexual dimorphism present in most loricariids has to do with guarding territories (odontodes on cheeks used as weapons) or directly with tending eggs (expanded lips in various loricariines).

I don't think so.

most species of Loricariidae are cave breeders and for that reason the males are caught more often. they stay in their cave to protect the eggs, the females just swim away. the males are then trapped by the fishermen and caught relatively easy. so most wild caught pleco species are male.

Rhinelepis species are one of the few pleco species that don't breed in caves, they just scatter their eggs in the current. I assume and suspect Pseudorinelepis uses the same tactics. So one would expect the male/female ratio of caught specimens to be close to 50/50.

just out of interest, why ask this question?

Maybe want to breed them ;)

Are plecos allowed in Thailand?

Janne

Thanks. IIRC it seems that it is possible now if not Pterygoplichthys and co., but not sure yet. The process to get permit may be rather long though.

I am aware that Rhinelepis and co. are broadcasters, but is there any sexual dimorphism? Are male and female supposed to be similar? By beigh broadcaster it is not necessarily mean they would be identical; eg. loads of cyprinids are sexually dimorphic despite being broadcasters.

Males have longer, more dense and numerous (non-evertible) cheek odontodes.

Is there a document describing those sex differences? I'd like to add the sexing information to the Cat-eLog, but to do that, I'd like to read the original document, just so that I know what I'm supposed to try to explain, if you see what I mean.

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Mats

MatsP wrote:Is there a document describing those sex differences? I'd like to add the sexing information to the Cat-eLog, but to do that, I'd like to read the original document, just so that I know what I'm supposed to try to explain, if you see what I mean.

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Mats

http://www.auburn.edu/academic/science_ ... elepis.pdf

And:
http://www.auburn.edu/academic/science_ ... udrin.html

Maybe someone with many pcs of L-95 can make a comparision on the odontodes?

Well darn, I should be more familiar with Jon's research.

I saw a group of 4 specimens (I think L152) of about 8 inches at Pier Aquatics last week. Even without the orange colouration (which none had) you could see the bristles on the males if you knew what to look for.