Where does “giant pangasius” come from?

giant pangasius (English) comes from English giant, from Middle English geaunt, from Old French gaiant, from Vulgar Latin *gagantem, from Latin gigantem, from Ancient Greek Γίγας, from Ancient Greek Γίγᾱς.

Ancestry of “giant pangasius”, step by step

giant pangasius traces back through two separate lines of ancestry.

via English giant

Step	Language	Word	Meaning
1	English	giant	A mythical human of very great size;...
2	Middle English	geaunt	A giant; A immoral or despicable person
3	Old French	gaiant	a giant
4	Vulgar Latin	*gagantem	—
5	Latin	gigantem	accusative singular of gigāns
6	Ancient Greek	Γίγας	one of the Gigantes; a Gigas
7	Ancient Greek	Γίγᾱς	—

via English pangasius

Step	Language	Word	Meaning
1	English	pangasius	Any of various edible freshwater fish of the genus Pangasius, native to southeast Asia, especially the iridescent shark, Pangasius hypophthalmus
2	Bengali	পাঙ্গাশ	A yellowtail catfish (Pangasius pangasius)

Every word from Ancient Greek Γίγᾱς →Every word from Ancient Greek Γίγας →Every word from Latin gigantem →