Preferred Gender Of Goldfish Options

[CP]

Hi Sheringham,

Here:
http://www.RafflesGold.com/forums/index.php?showtopic=2080

[Sabine]

If I bought another fish it would be a female, simply because I only have one female ranchu, but 3 males. Male fish by far outnumber females in other peoples tanks too. I read somewhere (??) that the ratio of male to female fry depends on the water temperatur between spawning and hatching. Can anybody here confirm this?

[desireless]

Temperature Dependent Sex Determination (TSD) applies only to certain species of REPTILES. For such species, the sex of the hatchlings is decided by the temperature, rather than genetics. Nile Crocodiles and certain tortise species are some examples. When you breed these reptile pets, the temperature during egg incubation is of great importance.

TSD is not known to apply to other existing animal classifications like fish.

Temperature will decide how fast your fry hatch though

[goldrush]

Well I'm not too sure about goldish but sex determination in some fishes is more than just genetically determined.Enviromental which include temperature is one of such factors.Here is a article on danio...aka zebra fish and an interesting write-up on sex determination in some fishes,

Note that the incubation temperature has some influence on the percentage of gender determination.Higher temp translate higher prportion of male hatching.Maybe you can experiment on this aspect to enhance your preferred sex

Here the article

http://www.rbej.com/content/3/1/63#IDAUHLYF

[desireless]

Zebrafish should be one of the rare few isolated cases.

Sex of goldfish (evolution of common carp) is determined by the sex chromosome.
http://www.edpsciences.org/articles/alr/pd...ldfish%20sex%22

[Sabine]

Haven't been online much lately, sorry for my late response.
Thank you for your replies and the links - complicated material!
In your experience, is the ratio of males to females in goldfish about 50/50?

[i_wan]

I prefer the female because it looks fat rounded body than the male and I think it is cute when the female swim. Also i found out that the male is more agressive to hurt the other fish than the female one, at least what i've seen so far... Is it true!? just to make sure...

This post has been edited by i_wan: Thu, 10 Jan 2008 11:42 pm

[Dick Benbow]

This has been a very interesting post. I never gave it any thought about trying to determine the sex and what advantages, disadvantages each bring, so it made me rethink some things.

In Koi females get bigger physically, have better body shape and take longer to develop color wise. If fed too high a % of protein food in the winter when they should be reabsorbing the protein from the eggs and if they are not spawned the next season can cause death by egg impaction. I do try and find females if possible with koi and i am very good about making sure they experience winter with lower temperatures and minimal feeding. I have a heater on my pond and hold it at 52-55 for a minimum of several months at which time I feed cooked barley and wheatgerm pellets about every third day. I have been very fortunate
to not have impaction problems for decades. I just wonder if something similar should be experienced with goldfish. What are the thoughts here of seasoned keepers? Similar or different. Either way it looks like I'm gonna learn. Hopefully i get my 150 gallon aquarium this weekend to set up.

[Wilson]

Good evening to all.
Just wondering if there is a preference over the gender of the goldfish.

I'm not really that specific about the gender, body form, pattern and color is more important although different individuals have different preferences.

[churico4ever]

Hi to All,
I prefer male... why?
because the dominat traits of a fish comes from the blood or the genes of the male more than the female... thats why my old mentor says...

[irissomnus]

Prefer a male because females tend to be prone to spawn binding and out of shape because of egg synthesis.Because of eggs unable to be shed,internal bacterial infection are my main concern.I'm sure bros here have seen this esp with anal swelling and edematous bloating with resultant smelly death(Pl do not confuse this with dropsy)

goldrush

what do you mean by egg "systhesis". and how would you know if they have these anal swelling and edematous bloating? what's edematous...? I have a strong feeling 2 out of 4 of my fishes are females (through genital observation and comparison) and I have only seen one time egg spawn in the beginning when I got them. Is it normal to spawn once only? I've had them for almost 2 years now...

irissomnus

[sengkang]

it doesn't matter to me whether the goldfish is male or female as long as the goldfish is rotund and cute and most of all, having unique colour pigment.

[ryukin88]

Since no need to pay dowry for female or prepare bride's price for males to mate ....both can do lah...no preference..haha

[jimicap]

i have one female ranchu that's unable to release its shed and stomach bloated. how can i save it?

i tried hand spawn the eggs but unsuccessful, maybe i do not do it in the right way

can someone pls teach me?

get a strong healthy male watch each morning for chasing then help by hand spawn it's easy if fish is able eggs start to release just by netting

This post has been edited by jimicap: Sat, 24 Jul 2010 1:13 pm

[goldenswimmers]

I go by quality of the fish not the sex but I have found more males than females and because I breed ranchu I look for a good looking female!