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Gladstone Fish Health Investigation 2011 - 2012 - Western Basin ...

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Appendix A–3: <strong>Fish</strong> health assessment variables<strong>Fish</strong> health assessment variables and substituted values, modified from Biomonitoring ofEnvironmental Status and Trends (BEST) program.Variable Variable condition Field SubstitutedDesignation ValueFins No active erosion F0 0Light active erosionF1 10Severe active erosion F220SpleenNormal: black, very dark red or red B 0Normal: granular, rough appearance G 0Nodular, containing fistulas or nodules D30EnlargedE30Other: aberration not fitting any above OT 30HindgutNormal, no inflammation or reddeningSlight inflammation or reddeningModerate inflammation or reddeningSevere inflammation or reddening0 01 10220330KidneyNormal: firm, dark, flatN0Swollen: enlarged or swollen S 30Mottled: gray discolourationM30Granular in appearance and texture G30Urolithiasis or nephrocalcinosisU30Other: aberration not fitting any above OT 30SkinNormal: no aberrationMild skin aberrationsModerate skin aberrationsSevere skin aberrationsExtensive redness as a rash. Scales intactSK0SK1SK2SK3SK4010203040Liver Normal: solid red or light red color A,B 0’Fatty’ liver, ’coffee with cream’ colour C 30Nodules or cysts in liver D 30Focal discolouration E 30General discolouration F 30Other: deviation not fitting any above OT30EyesGillsNo aberration, good, clea r eyesFresh haemorrhage (eg net damage)E0EOa00Opaque eye (one or bo th)Cloudy and swollen, re d or haemorrhagingE1E23030Ruptured (one or both)Normal: no apparent aberrationsE 3N300Frayed, ragged appearance F 30Clubbed, swelling of tipsC30Marginate: light discoloured margin M30Pale, very light colour P 30100

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