Goldenscale Vendorfish

Source
Goldenscale Vendorfish is an extremely rare fish found when fishing in Outland. It has a ~0.5% drop rate, though it seems to be higher in fishing pools - especially on Steam Pump Flotsam. It also has a chance of dropping from the Barrel of Fish which is rewarded from the 's dailies.

Uses
Obtaining a Goldenscale Vendorfish is part of. Other than that, as the name implies, it has no purpose other than to be sold to a vendor.