1) Bluegill or crappie 2) Edible fish 3) Fish 4) Perch 1) Bluegills 
A panfish, also spelled pan-fish or pan fish, is an edible game fish that usually doesn`t outgrow the size of a frying pan. The term is also commonly used by anglers to refer to any small catch that will fit in a pan, but is large enough to be legal. However its definition and usage varies with geographical region. According to the Oxford English....
Any small American freshwater food fish, such as a sunfish or perch, that is fished for by anglers but is too small to be considered a true gamefish
The smaller, less sought-after game fishes that may be caught on hook-and-line; typically applied to the sunfishes in Lepomis and related genera.
[n] - any of numerous small food fishes
noun any of numerous small food fishes; especially those caught with hook and line and not available on the market