alfonsino
/ˌalfɒnˈsiːnəʊ/noun
Any of several deep-sea fishes of the family Berycidae, widely fished for food; especially Beryx decadactylus and (more fully splendid alfonsino) B. splendens, which have deep, reddish bodies and large eyes.
Origin
Early 20th century; earliest use found in David S. Jordan (1851–1931). From Spanish regional (Tenerife) alfonsino, specific use of Spanish (Canary Islands) alfonsino (also alfonsiño), denoting various kinds of fish, apparently from Alfonso, the name of several Spanish monarchs + Spanish -ino, suffix forming diminutives, probably so called on account of its colour resembling royal robes.