CONTENTS:- 1. Introduction to Cytogenetics. 2. Fluorescence in Situ Hubridization Fish. 3. Biodiversity Conservation. 4. Stock Assessment and Aquaculture. 5. Knowledge of Fish Genome. 6. Cytogenetics and Molecular Testing in Hematologic Malignancies. 7. Cytogenetics in Fish COnservation. 8. Chromosomal Analysis in Population Sturcturing and Stock Identification. 9. Diagnostic Testing by Fish. 10. Fish Applications in Center Cytogenetics.