Having long opercular flaps: as, the long-eared sunfish, Lepomis auritus or L. megalotis.
The Century Dictionary (Public Domain)
Use "long-eared" in a sentence
"Last night I opened the lid for the first time this year to see my long-eared bat again."
"I love the changing scenery: from the eucalyptus standing in rows between the field and the stands of pine to the more tropical profusion as you descend, the bananas and bamboo, to the plane trees (or whatever they are) under which the long-eared, humped-back hot-weather cattle lie ruminant."
"The image of the “Thurber dog” is well known: a whimsical line drawing of a long-eared hound."