I have have had the pleasure of keeping quite a few rare fish species over the years but I think my Congo knife fish is probably the rarest fish that I have ever kept.I have never seen it for sale in any shop before nor seen it on any vendor's stock list and I only have it because it came as a cast away in a shipment of other fish.Before now,I have only seen it in photos in books.
So,what's your rarest fish?
So,what's your rarest fish?