Sexing Kribs

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Funktion

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I inherited an adolescent Krib a few weeks ago from my brother-in-law who has a healthily breeding pair. He's pretty good at all things fishy, and assured me it was a male. I got myself down to the pet store I use and asked them to order me a female - this arrived within the week and I figured my boy would be in for some good lovin'!

Anyway - the second Krib (the purchased one) is no longer with me :( . I found it floating after probably a week or so. The pair showed an initial interest in each other, which then seemed to turn into a bit of harrasment towards the new arrival. The male is about 3 1/2" in length, whilst the female was a little smaller - probably 2 1/2" or 3". I got to thinking that either the sexing is correct and they just didn't get along, or maybe the original fish is a female - and if that were the case would they bicker so much that one died (in this case, the smaller)? I was under the impression that Kribs weren't overly bothered about who they pair up with, and that a larger male should be able to get a smaller female in line without too much fuss.


My question to you is this: I am wondering how I can definitively sex the surviving Krib. I would get you a picture but he's skulking in his cave. 'He' has pointed dorsal and caudal fins, but no eye spots on the caudal. Since the female I introduced had a more rounded caudal fin with no eye spot, and a shorter (less pointed) dorsal fin I was wondering what is the defining characteristic - pointed dorsal fin or presence/absence of eye spot(s)?

That was a long story for a simple question, wasn't it?!


(By the way, it's a 120 litre tank, all water properties are normal, the tank has adequate heating/filtration, and the tankmates include a few tetras (glowlight and black neon), a pair of swordtails with a few young uns, and a trio of corys)
 
Sounds like a male, but it is best to post a pic. Kribs are none to want to breed readily, so if she wasnt ready, that may be what killed her. Or it ws another male.The big deffiner is, males ae torpedo shaped, adn the female, is shorter bodied, and has a round, deep red or purple stomach. here is a excellent link to a pic of a male krib: http://images.google.com/imgres?imgurl=htt...m%3D1%26hl%3Den.
Here is a buetiful pic of a female krib: http://images.google.com/imgres?imgurl=htt...m%3D1%26hl%3Den
Hope this helps!
 
Thanks for your input, Krib12.

Okay, so I finally managed to get a pic of my Krib last night (after 'coercing' him out of his favourite cave) but can't attach it to these posts in the normal fashion and don't have anywhere on the net to host it and link to. Anyway, looking at his shape he seems to be an eye-spot-less male.

My next question is about where to go now. I currently have two tanks set up for tropicals, with a third coming in a couple of months if I can get the goldfish out and into the pond whilst the weather is still warm (it needs relining first). Would it be possible to introduce a few Kribs (say 5 more) into my 120 litre tank, see if they pair up, then split them up with a pair in each tank? Would 120 litres be big enough to avoid any territorial conflicts, and could two pairs coexist in the same tank (in case I don't get the third tank tropical before winter)? Just an idea I was mulling over to try to avoid a repeat of the 1 on 1 harassment that happened before.

Any comments on this idea would be much appreciated.
 
Isnt a 120l like a 30g tank? If so, then yes, but only for them to pair up or you will end up with less fish you started out with. They breed in aobut 15 to 20g tanks. They are fveyr shy and need lots of cover and caves.
 
females of this species is actually more colorful than males, females are usually the ones with the brightest, red stomach...but if they're young, one sure way is to look at the tail, males will have a yellow/red stipe running on the top half of the tail. I was told that when males fight each other, they try to rip that yellow part of the tail off
 
my male has a red belly, its really interesting, when i first saw it i thought it was a female which meant i bought a mated pair of two females (didnt make sense to me). did some research, everything about the male was masculine except the belly.... But they dont fight and they follow each other so im guessing they are a pair.... The male red belly doesnt look like the female's one though.
 

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