Reference for Chullin 149:18

מאי בינייהו

R'Hisda raised the question: What is the law if such defects as [render an animal] trefah occurred in fish?<span class="x" onmousemove="('comment',' Are fish rendered susceptible to contract uncleanness as soon as they have sustained a physical injury which in an animal would render it trefah or not? This question obviously arises only according to R. Akiba's view supra.');">¹⁰</span>

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