sexing discus

**Scuba Kid** · 07-29-2005, 11:20 AM

i have 2 discus as of right now and i plan on getting 2 more in the near future. i recently read an article about sexing discus using lines of geometry and that is this invisble line from their dorsal and anal fins crosses the tail, it is a female, and if it doesnt, it's a male. but i have a problem with this theory, both of my discus seem to be half and half. the line from the dorsal fin crosses the tail, but the line from the anal does not. does this mean it's a male or female and is there another way to sex them?

Lisachromis · 07-29-2005, 02:11 PM

Wait til they are large enough and the one that lays the eggs is female? LOL Just kidding!

It's quite difficult to sex young discus and even the experts get it wrong sometimes. Your best bet to get a pair would be to grow up a group of 6 young fish and statistically you should have at least one pair in that group.

Lisachromis · 07-29-2005, 02:13 PM

Don't forget to quarantine them from your other discus. It's very easy to pass on the 'discus plague'. Minimum quarantine for this would be at least one month. This would mean separate tank, separate net, separate cleaning tools, all of it!

Beerleader · 07-29-2005, 08:23 PM

I have 10 and I really have no clue which is which, besides maybe 2 I am pretty sure about. My have never really paired off so that makes it hard..and one laid eggs so that made that one in particular obvious hehe

Otherwise I have found it to be quite difficult. Good luck! If you find any better methods let me in on that secret hehe

DavidDoyle · 07-29-2005, 08:27 PM

The line theory is not if either line crosses the tail but at what point the two imaginary lines themselves cross. If the lines intersect somewhere in the tail it is a fm but if they cross behind the tail, it is male. I do not vouch for the accuracy of the test.

**Scuba Kid** · 07-29-2005, 08:39 PM

Quote:

Originally Posted by DavidDoyle

The line theory is not if either line crosses the tail but at what point the two imaginary lines themselves cross. If the lines intersect somewhere in the tail it is a fm but if they cross behind the tail, it is male. I do not vouch for the accuracy of the test.

http://www.aquaworldnet.com/dbws/sexingdiscus.shtml

that is what i read and it is not describing what you said.

DavidDoyle · 07-30-2005, 12:33 PM

I was told the method I described by a very experiened discus person- all I can say about it.

**Scuba Kid** · 07-30-2005, 02:29 PM

oh okay. im just wondering if i read false information.

07-29-2005, 11:20 AM	#1
Scuba Kid Moderator Join Date: Jan 2005 Location: RI Age: 18 Posts: 4,224	sexing discus i have 2 discus as of right now and i plan on getting 2 more in the near future. i recently read an article about sexing discus using lines of geometry and that is this invisble line from their dorsal and anal fins crosses the tail, it is a female, and if it doesnt, it's a male. but i have a problem with this theory, both of my discus seem to be half and half. the line from the dorsal fin crosses the tail, but the line from the anal does not. does this mean it's a male or female and is there another way to sex them? __________________ Current setups: 1800 gallon koi pond, 10 gallon planted, 150 gallon reef, other FOWLR tanks

07-29-2005, 02:11 PM	#2
Lisachromis Senior Member Join Date: Jan 2005 Posts: 280	Wait til they are large enough and the one that lays the eggs is female? LOL Just kidding! It's quite difficult to sex young discus and even the experts get it wrong sometimes. Your best bet to get a pair would be to grow up a group of 6 young fish and statistically you should have at least one pair in that group. __________________ Lisa's Lair Cichlid Room Companion

07-29-2005, 02:13 PM	#3
Lisachromis Senior Member Join Date: Jan 2005 Posts: 280	Don't forget to quarantine them from your other discus. It's very easy to pass on the 'discus plague'. Minimum quarantine for this would be at least one month. This would mean separate tank, separate net, separate cleaning tools, all of it! __________________ Lisa's Lair Cichlid Room Companion

07-30-2005, 02:29 PM	#8
Scuba Kid Moderator Join Date: Jan 2005 Location: RI Age: 18 Posts: 4,224	oh okay. im just wondering if i read false information. __________________ Current setups: 1800 gallon koi pond, 10 gallon planted, 150 gallon reef, other FOWLR tanks

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07-29-2005, 08:23 PM	#4
Beerleader Senior Member Join Date: May 2005 Location: Lexington, Kentucky Age: 35 Posts: 382	I have 10 and I really have no clue which is which, besides maybe 2 I am pretty sure about. My have never really paired off so that makes it hard..and one laid eggs so that made that one in particular obvious hehe Otherwise I have found it to be quite difficult. Good luck! If you find any better methods let me in on that secret hehe

07-29-2005, 08:27 PM	#5
DavidDoyle Senior Member Join Date: Jan 2005 Age: 89 Posts: 497	The line theory is not if either line crosses the tail but at what point the two imaginary lines themselves cross. If the lines intersect somewhere in the tail it is a fm but if they cross behind the tail, it is male. I do not vouch for the accuracy of the test.

07-30-2005, 12:33 PM	#7
DavidDoyle Senior Member Join Date: Jan 2005 Age: 89 Posts: 497	I was told the method I described by a very experiened discus person- all I can say about it.

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