Home Forum Articles Sponsors Affiliates CP Map Chat FAQ TOS
Go Back   Trophs.com > Tropheus Forums > Tropheus Breeding

Notices

Tropheus Breeding Discussion of Tropheus conditioning, breeding, venting/sexing, fry care and rearing.

Reply
 
Thread Tools Display Modes
  #1  
Old 09-27-2014
Mastiffman
Status: Offline
Senior Member
 
::Profile::
Join Date: Oct 2010
Age: 40
Posts: 4,502
Thanks: 960
Thanked 889 Times in 733 Posts
Images: 17
Default Sexing African Cichlids (by Gary Kratochvil)

Hey Gang,


Mastiffman here...

I Just wanted to post this article written a while ago by Gary Kratochvile [Source Page]. I've seen this asked about many times in the past so why not just get the info up here. Definitely a good start and some well needed info for any cichlid based forum.


Male or Female?
How to sex cichlids. Text, photos and graphics by GARY KRATOCHVIL
1997 Gary Kratochvil, Exotic Tropicals


One of the questions I am most commonly asked is how to determine the sex of fish. The only positive way to determine the sex of sexually monomorphic species (males and females look similar) is by examination of the vent. This practice is commonly referred to as venting. What is the vent and where is it? The vent is the opening between the anus and the anal fin where the fish will excrete either eggs or sperm. The vent is also referred to as the genital papilla. For females the term ovipositor (egg tube) also refers to the vent. The photo on the left shows you where to look. In this article most of the photos are taken with the fish oriented with the head of the fish pointing away from you and and turned upside down. In addition all specimens photographed were sexually mature adults. With experience you will be able to determine the sex of some species as early as three to four months of age with a high degree of accuracy. The first six species pictured below are of mouthbrooding cichlids. Female mouthbrooders will lay an egg which is much larger in diameter than their substrate egg laying counterparts. Therefore the diameter of the vent is also much larger and easier to distinguish. Just look at the photos of the Tropheus moorii and Petrochromis trewavasae to see how easy these species are to sex. Conversely some substrate egg layers can be a bit more difficult to distinguish. Neolamprologus tretocephalus for example does not have near the differences in vent size and will require a little more experience to determine males from females. In some cases there will also be a pigment difference between the male and female vent. Julidochromis regani is an example of a species in which the male will have an elongated tapered papilla. In these species you can move your finger across the vent from left to right and the papilla will also move. In the photo below of J. regani I moved my finger from left to right. As you can see the papilla is pointing in the direction in which I moved my finger.
The last photo below is a profile picture of the mouth of Tropheus moorii. I have included it in this article because it is an extra tool in determining male from female. As you will notice the upper and lower lips of the adult male Tropheus tend to be much thicker and more pronounced than the female. Tropheus can be easily sexed by examining the vent but this will help you predetermine the sex as soon as you pick the fish up. This thickening of the lips is much more pronounced in older adults than in young adults.
The tools I find essential in the venting process are a jewelers loupe, an Optivisor and a good light source. The jewelers loupe should have at least a 20mm lens. An Optivisor is the brand name for a head mounted magnifying lens. Both of these items can be purchased at a jewelry supply store. In addition I would recommend four buckets. Why four buckets? In the first bucket you will place all the fish to be sexed. Place a bucket on the left and right side of the one with all the fish. As you look at the fish and if you can make a determination of male or female, put the males in the right bucket and the females in the left bucket. If you aren't sure what it is, put it in the fourth bucket. This will prevent you from handling this fish too many times. You will probably end up going through the undetermined bucket several times. Why did I put the males in the right bucket? Well, because males are always right! Just a joke, no hate mail please. While examining the fish do not keep them out of water for more than about 30 seconds. Try to keep the number of times you examine a fish to no more than 3 times. I would recommend that you first try this procedure with hardy Mbuna as opposed to some of the very delicate Tanganyikan species. In addition be sure that when you handle the fish that you have a wet hand. Vent sexing fish is an acquired skill that you will become more proficient at with the more fish you examine. In the beginning you may hardly see the differences in some species, but after some experience they will become much easier to determine.


PHOTOS OF VENTS


Reply With Quote
The Following 4 Users Say Thank You to Mastiffman For This Useful Post:
dannyt (09-27-2014), gianni528 (05-09-2015), GMfrontosa (12-28-2014), ZeeZee (09-27-2014)
  #2  
Old 09-27-2014
Mastiffman
Status: Offline
Senior Member
 
::Profile::
Join Date: Oct 2010
Age: 40
Posts: 4,502
Thanks: 960
Thanked 889 Times in 733 Posts
Images: 17
Default

MORE PHOTOS OF VENTS









Reply With Quote
The Following 4 Users Say Thank You to Mastiffman For This Useful Post:
dannyt (09-27-2014), gianni528 (05-09-2015), jakescichlids (09-28-2014), mfehmi (12-28-2014)
  #3  
Old 09-27-2014
dannyt's Avatar
dannyt
Status: Offline
Senior Member
 
::Profile::
Join Date: Jan 2014
Location: Australian living in Toledo OH
Keeping: 72 gal bowfront 22 F1 Mpulungu are in da house!!
Posts: 708
Thanks: 228
Thanked 156 Times in 135 Posts
Default

Another super useful post by Mastiffman. Thanks Drew!!
Reply With Quote
The Following User Says Thank You to dannyt For This Useful Post:
Mastiffman (09-27-2014)
  #4  
Old 09-27-2014
Mastiffman
Status: Offline
Senior Member
 
::Profile::
Join Date: Oct 2010
Age: 40
Posts: 4,502
Thanks: 960
Thanked 889 Times in 733 Posts
Images: 17
Default

You're welcome buddy!
Reply With Quote
  #5  
Old 12-28-2014
sweetTrophs's Avatar
sweetTrophs
Status: Offline
Senior Member
 
::Profile::
Join Date: Nov 2014
Location: Dubai
Keeping: Moliro Red 300 Liter 20pcs 3 to 4 inch/ Bemba 20pcs with Duboisi 8 (2M/5F) 300 Liter
Posts: 112
Thanks: 0
Thanked 3 Times in 3 Posts
Default

thanks a lot since one of my female in holding i am checking on each fish to confirm this will be very helpful
Reply With Quote
  #6  
Old 12-28-2014
Mastiffman
Status: Offline
Senior Member
 
::Profile::
Join Date: Oct 2010
Age: 40
Posts: 4,502
Thanks: 960
Thanked 889 Times in 733 Posts
Images: 17
Default

Good to hear.
Reply With Quote
Reply

Bookmarks

Tags
african, cichlids, gary, kratochvil, sexing

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Looking for a thread that has Quotes From the Aqualog: African Cichlids II Mastiffman Tropheus Species & Variants 11 10-22-2011 01:26 AM
African cichlids for sale dirt4949 Buy, Sell & Trade 0 07-31-2011 03:41 PM
African cichlids- fronts, peacock, Blue dolphin, trophs - $1 (Clifton, NJ, NORth NJ) mehowpl Buy, Sell & Trade 0 05-01-2011 03:26 PM
African Cichlids, quality cichlid peacock male, trophs, labs/ Pick up NJ clifton/ ny bensonhurst mehowpl Buy, Sell & Trade 0 04-01-2011 02:05 PM
New to the Trophs but not new to African Cichlids sculligan29 Welcome Center 6 06-27-2010 08:51 PM


All times are GMT -4. The time now is 05:18 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.