Rare Fish pic From Rare Fish series

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What kind of catfish is this, there is one for sale locally listed as a silver silk catfish but a search returns nothing close

It's actually a marine fish (That can live for as much as a few months in fresh water) and although it looks a bit like a catfish it isn't.

It is a polynemus and their are at least 9 species

Polynemus aquilonaris
Polynemus bidentatus
Polynemus dubius
Polynemus hornadayi
Polynemus kapuasensis Kapuas
Polynemus melanochir dulcis
Polynemus melanochir melanochir
Polynemus multifilis
Polynemus paradiseus

I've owned 2 species.

P. paradiseus I bought from Oliver Lucanus and his business partner Sean in 1997 in Montreal and kept it alive for about 12 months in freshwater not realizing it need a gradual transition from fresh to marine.
P. multifilis I bought from John and Fred at Pets Plus Lockport New York.

Great fish if you choose to get one.
 
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