My first encounter with stonescale eels was a few patches ago when they added a substantial number of stonescale pools in Tanaris. Fishing those pools provided a nice source of stonescale eels, granted it wasn't grandoise in any fasion, but I was able to find a few pools every time I went to the coast of Tanaris. Now however, every time I take a trip to the Tanaris coast, all i find are oily's firefin's and floating wreck's, all the stonecale's appear to be heavily farmed by now (as would be expected).
I started trying a new approach in order to get those stonescale's, I tried fishing straight off the coast, but finding the right area proved daunting. I tried off the pier in Feathermoon Stronghold in Feralis, I tried off the Azshura coast, I even tried some random puddle in Felwood. So far my greatest turnout of stonescales was from the pier in Feathermoon, with a whopping 1 eel every 20 or so casts.
I asked everyone I could think of to ask where to go, and the answer I got was to go to Azshara, however the coastline isn't quite far enough. There appears to be numerous islands off the coast of Azshara in what is called the Bay of Storms where lvl 58 elite sea giants roam. This is where my guildies eventually guided me to in search for my wealth in stonescales.
I went there this afternoon all decked out with my brand new big iron fishing pole, a pair of cheap cloth gloves that I had enchanted with a fishing boost, and a stack of aquadynamic fish attractors, and I was all set to fish up the Bay of Storms. When I got there I fished for about an hour without a single stonescale eel biting, and I was about to curse my bad luck when another guildie pointed out to me that the stonescales come out at night!
So here I am at work itching for the week to complete so that I can stay up hour upon hour in the wee hours of the eve fishing for those wily stonescale eels that have as yet escaped the fisherman's grip. Once I have the opportunity to acctually fish the Bay of Storms at night, I will let you all know the results. I did mannage to fish up a healthy ammount of winter squids durring that hour or so, more than I had ever gotten from the pier at Feathermoon Stronghold.