SCALE MORPHOLOGY OF CUNING FISH (Caesio cuning Bloch,1791) (CAESIONIDAE) USING DEKSTOP SCANNING ELECTRON MICROSCOPE

摘要

Scale morphology is importance in fish taxonomy today. Scale ultrastructure of Cuning fish (Caesio cuning) from Padang Waters, Pasir Kandang, Padang West Sumatera was studied using desktop scanning electron microscope (D-SEM Phenom Pro-X) since 2 January-27 February 2014. Scale as object research from below dorsal fins and lateral line region were removed. Scales was cleaned by water and dried naturally were prepare for the dekstop scanning electron microscope technique. The type scales of Cuning fish is ctenoid. Variations are found in components of scale morphology of this fish in diffrent body parts (below dorsal fins and lateral line position). Focus observation is located anterior, and central of the scales. Radii are found only on the anterior part of scale. Primary radii is more tertiary radii. These radii is divided of the anterior part of scale into few region and thus the scale have been sectioned. Lobes of anterior is diffrent . Inter circular is without granules and like straight of curve line is observed in some circuli. Lepidont form is diffrent, when we observed in below dorsal ins and lateral line position. Arrangement cteni of the scales in this fish could be used important for taxonomic characters.