This is not the best resource to distinguish the sunfish. I recommend that if you want to learn from an authority, please acquire “Inland Fish of Massachusets” by Hartel and Halliwell.
Green Sunfish
Big mouth.
Round pectoral fin. Small.
Bluegill
Black spot at ear.
Blue throat. Pointed pectoral fin.
Can be big.
Pumpkinseed
Note red tag on ear spot.
small in size and small mouth.
Pointed pectoral fin.
Redbreast Sunfish
Note long black tag on ear. Light lines above and below ear leading to spot.
