There's some great fishing and some very nice places to stay with very knowledgable people up in that area. I would recommend the Thunderbird Lodge, the Sha Sha resort, or the Island View Lodge. All of these have guides, if you want them.
Even eminent chartered accountants are known, in their capacity as fishermen, blissfully to ignore differences between seven and ten inches, half a pound and two pounds, three fish and a dozen fish. ~ William Sherwood Fox, Silken Lines and Silver Hooks, 1954