Serum chemistry, thyroxine concentration, and blood cell morphology of wild, young Blackchin Guitarfish <i>Glaucostegus cemiculus</i> sampled on the eastern Mediterranean coastline

In Blackchin Guitarfish, the serum albumin-migrating fraction measured by SEP combined with serum total protein concentration yields a much higher albumin concentration compared to that measured by bromocresol green spectrophotometry. The true identity of this albumin-migrating fraction remains to be identified. The analytes' calculated 2.5-97.5% interpercentile intervals should be considered as reference intervals applying to Blackchin Guitarfish of similar age but should be applied cautiously to adult fish.