barnesy Posted October 12, 2004 Share Posted October 12, 2004 i was wondering if anyone could tell me how to sex rostratus (thats the only part of the name i can remember) and at what age the males turn their blue colouration thank you. Link to comment Share on other sites More sharing options...
YeW Posted October 12, 2004 Share Posted October 12, 2004 I'd say around 7 or 8 cm at the minimum. They seem to take a bit longer to show than most other haps. Nice fish though. Link to comment Share on other sites More sharing options...
Citypainter Posted October 12, 2004 Share Posted October 12, 2004 I have a male at 14 cm just starting to show now. But If I stick the ent in the tank he straight back to female colouring. I am looking forwrd to him showing full colour. Link to comment Share on other sites More sharing options...
Mazimbwe Posted October 12, 2004 Share Posted October 12, 2004 Nice fish though. Hmmm...nice understatement there Yew. They're my babies your talking about. They have to be the most amazing fish when in full colour. The males back and about half to two thirds of the sides of the male are a brilliant metallic Blue/Green with gold flecks. While the bottom third of the fish is so dark that it appears black. They are nearly impossible to take a photo off that does any justice to the colouration because of the metalic "rebound" of light. While they are big slabs of fish flesh they are very peacefull in temperament but quite nervous and timid really...cept when the food goes in the tank. If you have a large tank, LARGE, that you can set up and leave alone they will lose much of their fear and be much more colourfull. As for sexing I find the Anal-fin shape to be a dead give-away for sexing Fossorochromis rostratus, once they get to a stage that would be puberty or sexual readiness . The females maintain the rounded shape that it present in the rear of the anal-fin of all the juvies, while the males start to have a much squarer trailing-edge to the anal-fin...this eventually gets to be long & pointed in the dominat male. HTH Link to comment Share on other sites More sharing options...
barnesy Posted October 13, 2004 Author Share Posted October 13, 2004 thanks for all your help everybody Link to comment Share on other sites More sharing options...
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