Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Some help with sexing Kribs please? (

heyaa1987 07-16-2010 10:11 AM

Some help with sexing Kribs please?
Hi i recently bought 2 kribs from my local lfs. They dont get along to well the bigger 1 chases the smaller 1 all the time and wont leave little 1 alone! The fins raise on bigger 1 and dives for the other? Not normal i dont think im not sure. Alls i want is a succesfully breeding pair :P Some pictures to help out

Bigger 1 -

Little 1 -

Magzmoir 07-16-2010 02:49 PM

They both look male to me. I have a small female and a large male, the female has shorter dorsal fin, rounder in the belly and a nice red/purple colour on her belly too. The males can get a red blush on the belly but no where near as deep in colour as the females.

The pictures here are very good examples, I know that when they are young its quite difficult to tell tho

1077 07-17-2010 03:45 AM

I am not certain but I believe the larger fish could possibly be female, and the smaller one a male.
Should this be the case, a larger female of cichlid species will often have nothing to do with smaller male.
The female will nearly always search for a larger male to mate with and larger males are more sexually mature than younger males.
Your tank looks to have suitable places for fishes to establish their own territory, the more places the better. If fish are relatively new to the tank, i might give it a few days to see if they don't settle in.
If the fish have been in the tank for a few weeks however, I might consider placing a couple more females and perhaps another male in the tank assuming there is room?
Often times it is easier to get a breeding pair from a group of fish , than it is trying to choose one male and one female in hopes that they will form a pair. They are like people sometimes,, and wish to choose their own mates.

iamntbatman 07-17-2010 06:03 AM

They both look like males to me, too. The top one could be a female, though. Much easier to tell once they get some age on them and especially once they start pairing up.

heyaa1987 07-17-2010 09:33 AM

Yeh the bigger acts more like a female as when (she) gets close to the other lies on her side. And she looks more dominat than the other chasing it around etc. Thats what im going to try get a few more kribs and see what happens. Altough i got told females have eye spots on their caudal and dorsal fins obviously not the case here! Cheers for the help tim.

iamntbatman 07-18-2010 05:43 AM

The eye spots don't always come in but they usually do with age. My breeding pair I've had for several years now have some really pretty color patterns on their fins.

Magzmoir 07-18-2010 08:12 AM

Both my male and female have the eye spots, males on his tail the female has them on her dorsal, I dont think with Kribs its a great indicator of sex but more as iamntbatman says rather related to age.

The reason I think both look male is the length of the dorsal in both fish reaches back to about half way past the tail in a point. Females the dorsal fin normally doesnt reach back that far. Also both of them their tails half a slight point in the middle like a spade from a pack of playing cards. Females have very rounded tails and dorsal fins.

heyaa1987 07-18-2010 01:25 PM

well if they are both males ive just bought a small young female. Let them decide who wants who now and go from there. shes only about 1 inch how long before you think she can breed?

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