Instead of going echoing truth crazy, it’s a good idea to have variety. I’d try 1 echoing truth, and one wipe away (so chalice @2 doesn’t completely kill you) and a trickbind, it stops storm as well as a number of things.
I’d also strongly consider mana leak.
While I’m at it, when you’ve got a list together make sure chalice @ 1 or 2 doesn’t completely annihilate you. If you’re looking for something to cut, I’ve always been very happy with only 3 meddling mage in my ubw fish list
If you’re running that many 1 cost creatures I would strongly consider ninja of the deep hours, although I disagree with sage. I’d strongly consider at least a 3 strip effect. While tweaking this deck, make sure you have enough blue to support FoW
Chalice of the Void at two hasn't been a common problem for this deck for months now; ever since Empty the Warrens was printed, when Stax began to see very little play. Echoing Truth is still the best bounce spell in this deck, because it gets rid of the usual permanents, as well as ETW-tokens, Bridge from Below-tokens, and several other things. 3cc bounce is very bad in a deck like this, especially Wipe Away, which I believe is a terrible card. You should never be leaving two mana open at one time, possibly one, for Stifle, but you should be casting additional creatures, disruption, et cetera, rather than sitting around with a Trickbind, or Mana Leak at hand.
Lastly, I would never cut down on Meddling Mages. Meddling Mage is one of, if not the best creature Fish offers, so running just three is illogical.