KTK Posted December 1, 2009 Report Share Posted December 1, 2009 Is it possable to sex bosemani rainbows just but looking at there color and or fins or can you just tell be temperament? Quote Link to comment Share on other sites More sharing options...
Vallisneria Posted December 1, 2009 Report Share Posted December 1, 2009 (edited) It can be tricky with Bosemani rainbows but adults males should have more coloring then females and have a more arched back/body. I also remember reading something about dorsal fin lenght in males. I'll try to find it again and post back. Edit: Ok found it. Not sure if its true or not. Can't check as I don't keep Bosemani anymore. If you keep species such as Boeseman's rainbowfish (Melanotaenia boesemani) or Banded rainbowfish (Melanotaenia trifasciata), sexing will be somewhat trickier, especially in younger specimens. Even in these species, there is however normally a difference in length when it comes to the first dorsal fin. If the first dorsal fin reaches the beginning of the second dorsal fin or proceeds even longer, you are most likely looking at a male rainbowfish. http://www.aquaticcommunity.com/rainbowfish/breeding.php Edited December 1, 2009 by Vallisneria Quote Link to comment Share on other sites More sharing options...
syno321 Posted December 1, 2009 Report Share Posted December 1, 2009 In most of the larger rainbows the upper posterior corner of the dorsal fin is pointed in males, in females it is rounded. Quote Link to comment Share on other sites More sharing options...
fishclubgirl Posted December 1, 2009 Report Share Posted December 1, 2009 Couldn't you just follow the fish and see which bathroom he/she uses??? Oops bad me but just couldn't resist!! Quote Link to comment Share on other sites More sharing options...
syno321 Posted December 4, 2009 Report Share Posted December 4, 2009 Couldn't you just follow the fish and see which bathroom he/she uses??? Oops bad me but just couldn't resist!! Do you really think that makes any difference these days? Quote Link to comment Share on other sites More sharing options...
vim Posted December 7, 2009 Report Share Posted December 7, 2009 Is it possable to sex bosemani rainbows just but looking at there color and or fins or can you just tell be temperament? Quote Link to comment Share on other sites More sharing options...
KTK Posted December 8, 2009 Author Report Share Posted December 8, 2009 Thanx guys Quote Link to comment Share on other sites More sharing options...
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