L201 male or female

All posts regarding the care and breeding of these catfishes from South America.
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pringle
Posts: 11
Joined: 05 Jan 2009, 00:27
Location 2: Copenhagen

L201 male or female

Post by pringle »

Can you please help me with sexing these L201.
sorry about the pictures but they are as good as I could get them :?
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pringle
Posts: 11
Joined: 05 Jan 2009, 00:27
Location 2: Copenhagen

Re: L201 male or female

Post by pringle »

more pictures
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P1010270.JPG
P1010269.JPG
pringle
Posts: 11
Joined: 05 Jan 2009, 00:27
Location 2: Copenhagen

Re: L201 male or female

Post by pringle »

final pictures
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P1010274.JPG
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MatsP
Posts: 21038
Joined: 06 Oct 2004, 13:58
My articles: 4
My images: 28
My cats species list: 117 (i:33, k:0)
My aquaria list: 10 (i:8)
My BLogs: 4 (i:0, p:164)
Spotted: 187
Location 1: North of Cambridge
Location 2: England.

Re: L201 male or female

Post by MatsP »

The "fat" fish in the middle (facing left) of the first image has the body shape of a female. Beyond that is hard to say, as the pictures aren't of a good enough quality to tell if the others are males or just immature females.

Actually, looking again on the second set of pictures, I'd say there's probably TWO females.

By the way, the ID of female is only 75% certain.

--
Mats
pringle
Posts: 11
Joined: 05 Jan 2009, 00:27
Location 2: Copenhagen

Re: L201 male or female

Post by pringle »

Thanks a lot!
I am happy as long as I have one male and female :)
But it is even better if I have 1 male and two females...
Now they will just have to grow a bit before trying to breed them.
Is it on the body shape you can see the sex? The females have a little more hip than the males?
Thanks
User avatar
MatsP
Posts: 21038
Joined: 06 Oct 2004, 13:58
My articles: 4
My images: 28
My cats species list: 117 (i:33, k:0)
My aquaria list: 10 (i:8)
My BLogs: 4 (i:0, p:164)
Spotted: 187
Location 1: North of Cambridge
Location 2: England.

Re: L201 male or female

Post by MatsP »

There are several keys that provide the determination of sex of the fish. Body shape ("more hip -> female") is one of those. Thick spine and odontodes on the pectoral fin, "hairy back" indicates male.

--
Mats
pringle
Posts: 11
Joined: 05 Jan 2009, 00:27
Location 2: Copenhagen

Re: L201 male or female

Post by pringle »

Do the females have just small odontodes on the pectoral finns? or do they not have any at all?
User avatar
MatsP
Posts: 21038
Joined: 06 Oct 2004, 13:58
My articles: 4
My images: 28
My cats species list: 117 (i:33, k:0)
My aquaria list: 10 (i:8)
My BLogs: 4 (i:0, p:164)
Spotted: 187
Location 1: North of Cambridge
Location 2: England.

Re: L201 male or female

Post by MatsP »

pringle wrote:Do the females have just small odontodes on the pectoral finns? or do they not have any at all?
Small, often bordering on non-existant, whilst (dominant) males have long. And a sturdier pectoral hard ray too.

--
Mats
pringle
Posts: 11
Joined: 05 Jan 2009, 00:27
Location 2: Copenhagen

Re: L201 male or female

Post by pringle »

Thanks for your answer!
It is very diccult to see the diffence on mine. Maybe they are just to young. I believe i can see some small odontodes on two of them if i look closely on the picture. That could mean I have two males and one female...
Next comes the question if it is l201 or hyp. contradens :?:

Ones again - Thanks
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