What's the difference between moonfish and moonish?

Moonfish

Definition:

• (n.) An American marine fish (Vomer setipennis); -- called also bluntnosed shiner, horsefish, and sunfish.
• (n.) A broad, thin, silvery marine fish (Selene vomer); -- called also lookdown, and silver moonfish.
• (n.) The mola. See Sunfish, 1.

Example Sentences:

Moonish

Definition:

• (a.) Like the moon; variable.

Example Sentences:

• (1) DA is half-moonish and white-nacreous in rodents; its upper surface presents a longitudinal crest.