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Aquacultured fish pairing/ genetic line


Gorgi

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Does anyone know if aquacultured fish breeders mix broodstock when selecting fish to pair up to breed?   I think they would to strengthen the genetic line, but if its about profit, they may not.  In my opinion a stronger genetic line produces a healthier and more beautiful fish.   Apparently i have to much idle time on hand to be thinking about this and haven’t researched it, but curious if anyone knows?   

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It depends upon the situation.  In clownfish you can go down to F4 or F5 (4th / 5th generation) before it becomes an issue.    As for me I like the fish to be wild caught if I can just for best practices but that's not always possible.  Wild Darwin clownfish haven't been collected for many many years.  So I am guessing with some we are starting to approach levels that are concerning.  Although Sustainable Aquatics has traceable F2 available.   The other fish that probably gets interbred a lot are neon gobies.   I am unsure of the wild/captive status of the large producers broodstock though.  

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Thanks for the reply.   I just find this interesting as more captive bred species are readily available and how it will affect future stock.

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It depends.   For ones where you see a progression of the amount of white let's say then yes that's typically the way.  But a lot of these designers are by mixing various strains or even species.  For example, the long fins were a naturally occurring 1 in a million fish that they then mated with another fish for production, maybe a sibling but maybe not.  The point being it wasn't a line bred situation that I typically refer to as a "strain".   

This convo has sparked my interest.  I am going to ask some people about it to see what they say.  I will let you know.  

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