Able to be fished in, able to be used for fishing(adjective)
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Use "fishable" in a sentence
"The Chetco, just across the state line, puffed up some but stayed fishable, which is what Andy Martin, the guy on the left in the picture on the right, was hoping."
"We're a bit lucky out here, because the spring water keeps the trout streams fishable through the winter."
"The fundamental laws it enforces keep our water drinkable, swimmable, and fishable."