Does Temperature affect the sex of your fish?
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- čas přidán 24. 08. 2024
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Thanks for the support sir. From a fellow guppy fan north of the border. I going to try and adjust my temperature and see what if any impact it has.
Glad to help
I subscribed! 😊
@@josephschembrithanks
I notice the same Mike . I especially notice this in the winter when I keep my house cooler. The temperature tends to drop to between 71 and 75. The ratio is about 30% male to 70% female. Great Channel
Thanks for sharing
I have a heated fishroom here in the Netherlands when its summer i have more male guppy's and endlers. Like now in the winter i have a lot of females. Until March or something like that than i have the turningpoint going back to more males. Noticed this a few year ago (breeding livebearers for almost 10 years)
Have a great day 🙏
Thanks, you too!
The first drop of my newest strain was 100% female (29 survived of the 30-35+ of them born a few days after their parents arrived to my fish room in the mail). With the subsequent drops that I can confidently tell male vs female from (Dec and Jan; Feb's is too small to me still), they're closer to 40/60 (still favoring females; born and raised in water that's been between 76-78ºF.) I do think temperature has some type of influence on it.
Nice!
I agree when my tubs are outside in the sun they crank males in the winter when my temps flex I get a mix to female heavy.. great topic great video
Thanks!
I breed endlers and platys in colder water 72-73F and tend to get more females.
See
I breed and sell Endler Guppies and I see more males with higher temps as well.
Thanks
I think I have experienced the same results that you’re talking about as far as warmer temperatures more males in live bearers. I very rarely run my tanks up to 80 but when I try to raise fry faster, more water changes warmer temperatures, it does speed up their metabolism they do grow faster, but they’re shortens their life so I keep mine around 75 to 76°. I have more problems with lower pH in my area so I have to add crush coral now to my live bearers tanks where I didn’t used to have to do that. Love seeing you Michael.
Thanks Susan!
Mike i have to agree with your analogy. i experienced that ratio when i was breeding bettas to get more males i increased my temp. more females lower the temp, I am doing livebearers now and seeing how it works as I am trying to build up my breeding colony so at this point i want a few more females than males as we all know what is on the mind of male guppies lol.
Good Luck
There tends to be more female guppies in my fishpond. And that's quite cold 😊. Tropical tanks 50/50
Yup
Went and subbed, he’s at 161 now 😊
Thanks!
Super interesting. This is something I’ve been thinking about a lot lately and how to best approach collecting accurate and reliable data for.
Glad you enjoyed it!
3 of my females gave birth over the last 3 days and there is about 8 males to about 70 females .. nothing has changed since their previous births and they were all 50-50 male female
Actually thinking about it the temps did drop but only by 1'c
See! lol
Sometimes I think yes then I’m not sure.
LOL
the more I watch your videos the more I realise that you are so talentedin video making
Thanks, but I really suck at it.
Michael I've found that as well in my fish room as well as in my outside ponds, as I live in SW Florida. In the winter months I have way more females. In the summer months way more males.
Thanks for the info!
Always figured it was just genetics mine seem to male heavy regardless of temp
Huh
Hi Michael
For me personally I have found the same, the more warm the water seems to be, the more males I seem to get in a batch. I don't do very many guppy types as you do but I do have the odd few. Xx
Thanks for sharing
First! Woohoo! 😂
I find the exact same, warmer water = more male guppies in my fish room.
Nice!!
Hi Michael, I love your channel and got me into breeding high end swordtails and guppies. Im glad you made a video about this. I do find that harder water and hotter temperatures gives more males. I’ve been keeping my fish a little lower end due this reason. I rather have more females. Maybe the hotter temperature makes sperm that are males move faster?
LOL, I don't know!
hey hii how to deal with dragon fly larve in outdoor breeding tubs
Watch my pond videos.
I definitely had a ton more females when one of the heaters in my colony tank broke without me realising. The water didnt really get cold but the tank was definitely running cooler enough to affect the female to male ratio.
See!
I've always seen to have the same thing happen too. I'm more curious about why some are greyish and some are yellow ish? Fry that is. Thanks for sharing
Guppies have a base body color that is either greyish or yellow ish. The yellow is usually called either blonde based or golden based (depends if you are in the US or not). The grey base is a dominant trait so if a tank is full of grey guppies that have both copies of the gene, they will throw a percentage of blonde based guppies pretty regularly.
That is just the base of the guppy.
Okay thank you both for the answer 🙏✌️👍
I keep my guppies at 24c gawd knows what the is in faranheigt kinda get a good mix just seems the males get predated on more than the females to me , but it's nature I guess . But I don't breed for profit just love my guppies such a mix from originally 2 pair
about 75F.
There isn't much research to be found on that topic. What few papers that are published generally point to it being genetic, however nothing published is conclusive.
I personally beleave it to be genetic from my years of breeding, research, and testing.
However like you said, there is no proof either way and its still a crap shoot as to what if anything has an effect on the sex of the fry.
It's a mystery! LOL
I subscribed to him.
Thanks!
With my endlers my main tank is close to 80F and I seem to get a decent spread of males and females, but I noticed In my indoor mini pond that does not have a heater nor is in an overly heated room (during really cold spells the water may be down to 65F) I seem to get more females then males.
Told ya!
all I knows when its cold outside, momma is a lot more likely to give me some that night ? so maybe its the same with fish......
and yes, I live in south East Texas ...so it doesn't get cold very often
LOL, thanks for the info.
What is a good GH range for guppies. I read all different numbers in line. What is your GH?
No idea, I wouldn't worry too much about it.
Your observations are valid. I do have a biological science background, but not specifically guppy genetics. There are species (e.g., turtles) where incubation temperature directly affects offspring sex. However, it is pretty well established that guppy sex is determined by X & Y chromosomes*, just like in humans. One would expect a 1:1 ratio, but skewed sex ratios like you’ve observed have been replicated jn controlled experiments. There doesn’t appear to be consensus why, just some theories. Could it be that sperm competition or fertilization is affected by temperature? Could temperature affect embryo development within the female, and male embryos are more likely to be aborted at lower temperatures? Could it be that new fry mortality is higher in males at lower temperature? Could it be a combination of these factors? Could this phenomenon vary between different guppy strains? There are a bunch of unknowns.
*Not all livebearers are the same. X. maculatus Platies are odd, for example. They have W,X,&Y sex chromosomes. I don’t know about Variatus Platies, or the various Mollies, Swordtails, etc.
Too smart for me. LOL I am not sure why or IF it is a think, just an unscientific observation.
@@MichaelsFishRoom You’re smarter than you pretend to be, and your observations are substantiated by people who saw similar results took the time to test them. Why it occurs is a more complicated question.
@@edmorris1437 Nah, I am really just a pretty face.
What temperature do you keeps yours at normally
Room temperature
Hi Mike, I have an unrelated to this video question. I have to move unexpectedly. My property management company changed their pet policy. Plus my 80 year old Mom needs help. I'll be moving from Tennessee to Alabama. It will be a 7 hour drive. I have fish I want to keep. I'm thinking of renting a small uhaul trailer and loading it with the three 100 gallon stock tubs I have. I can fill them 30 % full, load them with the fish I want to keep, use the battery operated air pumps to supply air to some air stones, and drive them to AL. Does this sound reasonable? Or stupid? I've never moved fish this far before. I will keep fish mouth size in mind when I decide what fish goes in what tub.
I'm glad you are feeling better!
Thanks! Sorry about your need to move. Do you have that many fish to move that you need 3 100 stock tanks? If possible I would use buckets, but your plan will work I think.
@@MichaelsFishRoom I had planned to move at the end of the summer. I'll be living with my Mom who doesn't want fish tanks in the house. My fish will be in tubs outside. I'll be in the Deep South of Alabama so the weather should be hot enough by the end of April (my get out date) for the fish to survive outside.
Hi, you're plan should work fine. I'd connect the airline to seeded sponge filters, you get air and filtration. Plus don't feed your fish a day or two before the move. Finally watch as many vids from ofr behind the scenes, Reaper mainly does fish rescues often over long distances. All the best and safe travels.
Ian
The same thing is happening in my life..Not Enough Females 😂😅
Mike I live in a suburb of Chicago, Illinois. Is this too far for a delivery of guppies from you ??
Nope, I've shipped to AK and HI.
IMO No but we can still be friends
Oh thank god, because you have the best wood.
😂 🪵
hey brother I just started breeding guppies in outdoor tubs as like in Thailand and just now rain started will this affect them in any bad way??
I have a few videos on outdoor tubs, I talk about that kind of stuff.
@@MichaelsFishRoom could you pls share the link of the videos
Some day I will embark on the science side of this question because I'm sure it exists. However, I agree the warmer the water the more males. By warmer I mean temp of 78-84 or so.
Yup
For me Michael I find that the strain has more to do with male to female ratio rather than temp. Just my 2 cents, Buddy
That's interesting, I will have to check that out.
Dude - there are studies made on temperatures regarding getting more males when it is warmer.
Also if you go close to 20 degrees Celsius you will get females.
I can link the studies if you want them
If you want males you will do it best if you have higher than 26 degrees Celsius.
I’ve never seen a study on live bearers. Can you site them?
www.entomoljournal.com/archives/2017/vol5issue3/PartY/5-3-78-680.pdf
@@MichaelsFishRoom you can also find studies on other live bearers then guppies.
I just found those to fit the topic
@@beastfr0meast93still need you to site what you’re talking about please.😊
Any heaters you recommend?
They all kinda suck....Sorry.
Hullo man how many sexy guppies may I put into 20 gal tank?? Thanks bye for now
Depends on how lazy you are. I can have 100 because I have an auto water change system. You may only be able to maintain 20.