meen kothi paravai
Kanangeluthi
The king of fish is called Koi in my opinion
salmon is not found in India, but it is called Kaala fish/ thiruvalai.
Surmai fish in English often called King Fish or King Fish Mackerel found mostly in Indian Ocean.It is also called Indo-Pacific king Mackerel
It is arakya (common Malayalam of 'tuna' is choora', a fish)
trout fish
herring fish
"Thangaraj" in Tamil means "king of gold" or "golden king." It is a combination of two words: "Thanga" which means "gold" and "Raj" which means "king" in Tamil.
Yeast is called nidhi in Tamil.
meen,miin
magaraja
Amethyst is cukantiyum in Tamil.