What is the meaning of Moonfish?

Any of various flat, oval marine fish species.

1. The family Monodactylidae (fingerfishes, silver angelfishes).
2. Mene maculata, of tropical coastal waters of the Indo-Pacific area.
3. Most species of the genus Selene.
4. Atlantic spadefish (Chaetodipterus faber).
5. The family Molidae (ocean sunfish).
6. The opahs in the family Lamprididae.
7. The cusk (Brosme brosme), a North Atlantic cod-like fish in the ling family Lotidae, the only species in its genus.
8. The southern platyfish (Xiphophorus maculatus).

The family Monodactylidae (fingerfishes, silver angelfishes).

Mene maculata, of tropical coastal waters of the Indo-Pacific area.

Most species of the genus Selene.

Atlantic spadefish (Chaetodipterus faber).

The family Molidae (ocean sunfish).

The opahs in the family Lamprididae.

The cusk (Brosme brosme), a North Atlantic cod-like fish in the ling family Lotidae, the only species in its genus.

The southern platyfish (Xiphophorus maculatus).

Source: wiktionary.org