i actually tried hand breeding sir but to no success. Should i use methylene blue after i had mixed the milk and eggs together? And should i wash the eggs after? And leave it in a bowl untill they attach to it? Cover it and put some aerator? And i really dont know how to determine viable eggs from the rotten
Let´s start the easy way, I consider you all having hobbyistic intentions, so a small scale within 1 - 3 Aquaria and probably a little gardenpond should be enough.
Without any force you should watch your fishes when they start chasing, the males will chase the females. This is pure distress, so the less males there are the healthier it will be for any female.
In bad cases females can also be chased to death!
Just get the point of time when the female has a big belly full of eggs. You can test it by very, very light pressure, some eggs should just come out by themselves.
Then it is just a matter of time when they will start laying them by attaching to any plants or substitutes.
For a smale scale by best successes were without any chemicals at all.
I just took defined couples of fishes including 1 female and never more than 2 males (actually better just one at all) and placed them into a tank that was naturally running with a foam[!]-filter and stuffed with submerged plants (best was Elodea sp. and similiar ones).
This even was my best way for all ornamental fishes, even small ones like Guppys or Corydoras.
For being biologically balanced I never had any fungus coming up in it, so most eggs developed fine and for being widespread between the plants any fungus appearing could not spread itself.
If you strip off all eggs and milk by hand it is that balanced, so fungus can appear and spread.
The technical problem with eggs from any carp that they are quite sticky and it is a further step to get away this ability. Trout eggs are much easier to handle.
So I can really recommend the "natural" way at least for the beginning!
But very important is to "quarantine" the parents before and getting rid of any ectoparasite by sodium chloride bathing is the best way!
(Get used to this method before and generally, there is no better general remedy at all!)
A very great way for ponds also there is the "Dubisch"-Method....just check up what you find out about it!
More to read:
Just read all you can find by know and keep an eye on naturality and biology not chemistry!
The Goldfish technically just is a small brother of the bigger common carp, so you just have to scale all evidences down to aquaria and garden size.
By the way I assume the parents being not too large, of cause if they have maximum size of about 50+ cm you must treat them like real big carps.
