Billphil Posted December 27, 2011 Report Share Posted December 27, 2011 There is quite a discussion on one of the IBC forums on sex change in aggressive fish and a couple of posters have said they have seen it happen in Betta splendens Has anyone had any experiences? Link to comment Share on other sites More sharing options...
Fletch Posted December 27, 2011 Report Share Posted December 27, 2011 Jarrod had a few "girls" sprout once sold, these were twelve month old fish. We just thought late bloomers. Would doubt a boy could change though. Link to comment Share on other sites More sharing options...
Nicola Posted December 27, 2011 Report Share Posted December 27, 2011 way off topic of fish, but Hens, if there is no rooster around, one can get aggressive and start "crowing" and grow spurs.. I have had one attempt to crow a few times(she has also tried to mount the other 2 hens :/ ), it sounds like she is being strangled, so they don't change sex per say, just mimic the other sex. Link to comment Share on other sites More sharing options...
Matt_95 Posted December 27, 2011 Report Share Posted December 27, 2011 I've had it happen in sword tails, in the lack of a male the female can grow a sword and gonopodium (spelling?) it's mimicry though and they can't breed. Link to comment Share on other sites More sharing options...
fishbites Posted December 27, 2011 Report Share Posted December 27, 2011 only ever heard of gender changes in marine fish - male clowns will turn into females if they are larger than the other male (think thats the right way round).... Link to comment Share on other sites More sharing options...
somchai2500 Posted December 27, 2011 Report Share Posted December 27, 2011 I have 3 sororities and noticed some time ago that 1 females finnage (of the same spawn) is larger and quite full. could this be GIH or similar? Roy Link to comment Share on other sites More sharing options...
les Posted December 27, 2011 Report Share Posted December 27, 2011 I have been following the thread on the IBC as well. I have never seen a male turn out to be a female but have seen mistakes where fish have been thought to be female and turned out to be male so IMO the Betta that are sometimes thought to be female but then turn out to be males are just late to mature sexualy wether this is a trait that helps them to survive the faster maturing agresive males is plausable and it is also plausable that it could be atributed to hormones secreted by other fish but so far I havent seen any resurch to prove it in Bettas. So I will take the stance that NO Bettas dont change sex . I do know that Barramundii change sex and so do Marron so in some species it is posible Cheers Les Link to comment Share on other sites More sharing options...
Bettarazzi Posted December 27, 2011 Report Share Posted December 27, 2011 I have had a female sprout longer fins suddenly but not as long as a male. I was certain she was a male plakat and she seemed to exhibit male type flaring when shown another male. However after she was left uncarded for a little while she dropped eggs confirming she was in fact female. That's the long way of saying I haven't observed a Betta of a confirmed gender change sex in my fishroom. Link to comment Share on other sites More sharing options...
Yanagi Posted December 27, 2011 Report Share Posted December 27, 2011 As someone mentioned, there is plenty of sex changing going on in the salty world. In fact marine fish who do not change sex at some stage are the minority. Some will go from male to female, others from female to male and some are hermaphrodites. That said, I don't think Bettas truly switch from one gender to another, but some are simply late bloomers. Link to comment Share on other sites More sharing options...
zhong89 Posted December 28, 2011 Report Share Posted December 28, 2011 I don't think betta actually change their sex at all. There's being cases where a "female" suddenly sprout into a male in a sorority tank I think is due to other circumstances. Such as the fact that sprouting early might get him beaten up or killed by a big dominate male in the fry tank. I have cases where the dominate male removed (jarred or sold) the smaller males or thought to be females started to grow faster with longer fins etc. it's not necessarily a sex change but they hide they gender very well and only show when it suits them. Just my 2 cents Link to comment Share on other sites More sharing options...
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