"Frog fish." Monkfish (US: angler fish). A fish with a sweet flavour and succulent firm flesh but with the ugliest appearance imaginable. It is found in the Mediterranean and Atlantic, in coastal waters of north western Europe. It can be recognised by its large head and fan-shaped fins. The fins and the operculum are spiny. It can be eaten fried or in soup. The larger fish often have better flavour. It has a hideous head, which is why it is usually displayed without it, and a muddy colour. It is known as the anglerfish as it bears on its head a 'rod' and 'lure' which attract its prey. The meat of the tail is sweet and succulent - almost like lobster meat, entirely compensating for is appearance. The flavour may well be assisted by its own diet which is high in shellfish. The best monkfish are Lophius piscatorius and the similar Lophius budegassa, the favourite of the Spanish. American monkfish or goosefish (Lophius americanus) is considered inferior, while New Zealand monkfish (Kathetostoma giganteum) is related to the stargazer and is only fit for soup.
"Guitar fish." Violin fish. Named, as one might expect, from the elongated ray shape, resembling a string instrument. Found around Sicily and the southern Mediterranean. Treated in the same way as angel fish.
Lizard fish, so named because of the shape of its head. It adds good flavour to soups.
Opah or moonfish, also, confusingly, known as the sunfish. This can be a huge fish, up to 50 kilos in weight. We saw one in an aquarium and it looked positively prehistoric. However the meat is good, pink and firm and can be treated like tuna, eaten raw as sushi, fried or grilled or even roasted.
Pilot fish. A distinctive, striped fish of the Mediterranean where it is mainly found around the Balearics and Malta. It is good for either grilling or poaching, having firm white flesh.