Go Back   Aquarium Advice - Aquarium Forum Community > Freshwater > Freshwater & Brackish - Coldwater, Native Fish & Ponds
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 06-11-2013, 12:30 AM   #1
Aquarium Advice FINatic
 
Koikeeper99's Avatar
 
Join Date: Aug 2012
Location: Minnesota
Posts: 635
Sexing koi?

Anyone know how to sex koi? I have an idea because I read females fins are more rounded while males are more rectangular is this correct or how do you guys/gals tell?
__________________

__________________
Koikeeper99 is offline   Reply With Quote
Old 06-11-2013, 03:02 AM   #2
Aquarium Advice Addict
 
bettaowner's Avatar
 
Join Date: Jun 2012
Location: Hawaii
Posts: 5,981
Male koi will have rough white bumps on the gills during the breeding season.
__________________

__________________
Rule number one: Always research a fish before you buy it.

Rule number two: Always cycle your tank.
bettaowner is offline   Reply With Quote
Old 06-11-2013, 12:27 PM   #3
Aquarium Advice FINatic
 
Koikeeper99's Avatar
 
Join Date: Aug 2012
Location: Minnesota
Posts: 635
Quote:
Originally Posted by bettaowner View Post
Male koi will have rough white bumps on the gills during the breeding season.
When is "breeding season " typically?
__________________
Koikeeper99 is offline   Reply With Quote
Old 06-11-2013, 02:39 PM   #4
Aquarium Advice Addict
 
bettaowner's Avatar
 
Join Date: Jun 2012
Location: Hawaii
Posts: 5,981
Breeding season is usually in the winter or spring
__________________
Rule number one: Always research a fish before you buy it.

Rule number two: Always cycle your tank.
bettaowner is offline   Reply With Quote
Old 06-12-2013, 10:46 AM   #5
jlk
Aquarium Advice Addict
 
jlk's Avatar
 
Join Date: Sep 2011
Location: philadelphia suburbs
Posts: 11,119
Sexing koi is pretty similar to goldfish- its very difficult until they reach sexual maturity and even then, it is not easy. Males will develop classic breeding tubercles on their gill plates and pectoral fins when they are in ideal breeding condition. Females generally tend to be a bit rounder or even lopsided. You can also try to vent mature males and females. Behavior can be a great indicator as well. Breeding season is typically in the spring when the pond temperature warms and food becomes abundant unless you live somewhere that is temperate year round.

Heres a decent article on sexing koi and goldfish:

http://www.raingarden.us/sexingkoiandgoldfish.pdf
__________________
jlk is offline   Reply With Quote
Old 06-13-2013, 03:12 PM   #6
Aquarium Advice FINatic
 
Koikeeper99's Avatar
 
Join Date: Aug 2012
Location: Minnesota
Posts: 635
Alright thanks!
__________________

__________________
Koikeeper99 is offline   Reply With Quote
Reply

Tags
sexing

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Convict cichlid sexing TWEDM1 Cichlid Discussion 2 01-20-2012 03:18 AM
sexing convicts minky123 Cichlid Discussion 4 01-16-2012 03:33 PM
Sexing a honey gourami Scouser Freshwater & Brackish - General Discussion 7 12-31-2011 04:18 AM
Sexing rams littlebitlarisa Cichlid Discussion 27 12-15-2011 10:24 PM
Sexing guppies Klr0311 Freshwater & Brackish - Breeding 8 10-12-2011 10:19 AM







» Photo Contest Winners







All times are GMT -4. The time now is 05:59 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.