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Medical Definition of Fish test
1. A reddish colouration (nuptial colouration) caused in certain male fishes (bitterling) by the injection of the gonad hormone. Synonym: fish test. (05 Mar 2000)
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1. A reddish colouration (nuptial colouration) caused in certain male fishes (bitterling) by the injection of the gonad hormone. Synonym: fish test. (05 Mar 2000)