Where does “castanyoleta” come from?

castanyoleta (Catalan) comes from Catalan castanyola, from Catalan castanya, from Latin castanea, from Ancient Greek καστάνεια, from Ancient Greek κᾰ́στᾰνᾰ — sweet chestnuts; chestnut.

castanyoleta (Catalan): Chromis chromis, a species of damselfish native to the Mediterranean

Definitions

Chromis chromis, a species of damselfish native to the Mediterranean

Ancestry of “castanyoleta”, step by step

Step	Language	Word	Meaning
1	Catalan	castanyola	Atlantic pomfret
2	Catalan	castanya	chestnut; hit, collision; feminine singular of...
3	Latin	castanea	a chestnut tree; a chestnut
4	Ancient Greek	καστάνεια	Alternative form of κᾰ́στᾰνᾰ; chestnut
5	Ancient Greek	κᾰ́στᾰνᾰ	sweet chestnuts; chestnut

Every word from Ancient Greek κᾰ́στᾰνᾰ →Every word from Ancient Greek καστάνεια →Every word from Latin castanea →