Thank you Chanda Sir for your timely input.I can share some thing regarding this.In my P.S.C. Interview I was not only grilled but to be truthful, abused for mentioning keeping ornamental fishes as my hobby and not knowing much about pisciculture.The members asked me the scientific names of several tropical fishes,common diseases and their cure etc. etc.
So my friends take every possible care regarding this.
Basu