adipose fin
US /ˈæd.ɪ.poʊs fɪn/
UK /ˈæd.ɪ.poʊs fɪn/

1.
pinna adiposa
a small, fleshy, rayless fin on the back of some fish, such as salmon and catfish, located between the dorsal fin and the tail
:
•
The salmon's adipose fin is a key identifier for its species.
La pinna adiposa del salmone è un identificatore chiave per la sua specie.
•
Catfish are easily recognized by their prominent adipose fin.
I pesci gatto sono facilmente riconoscibili dalla loro prominente pinna adiposa.