There are better options over a Siberian or white sturgeon....not mentioned that these other smaller sturgeon species are readily available. Just can't believe you suggested a Siberian over the readily available smaller species.
Oh the horrors, oh the humanity!
As said..i searched online, and they were the only ones that were easily accessible. Im not in the USA, so i don't know what is, and what isnt readily available.
Tell ya what, how about you find those "other, readily available smaller species" and post him a link where he can get them in this thread? That would be nice of you. I took time to look for him, and that's what i came up with. You on the other hand, had a go at my suggestions after i actually took time to look, rather than taking the time to look yourself.