mayfish

from The Century Dictionary.

• noun The barred or striped killifish, Hydrargyra majalis.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) A common American minnow (Fundulus majalis). See minnow.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A common American minnow (Fundulus majalis).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States
• noun black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States