Blathers will give a speech on the bluegill when it is donated to the museum:
In Animal Crossing
"Even run-of-the-mill, common fish are valuable resources, you see. All part of the grand tapestry, wot! We will take excellent care of this fellow, oh yes. You can rest assured. Excellent care, indeed."
In Wild World
"Bluegills are a type of whitefish and they are most definitely edible, wot! Even so, I would avoid the skinny ones. They look rather full of bones..."
In City Folk
"...Ah, hoo, the bluegill, scourge of fishermen everywhere. Once introduced to an area, this fish will eat up many of the indigenous breeds, eh wot? But with a face like that, it's hard to believe our wee fishy friend here has any bad intentions..."
In New Leaf
Blathers gives no specific speeches once the bluegill is donated, but he posts a description for it.
"Bluegills have spikes on their dorsal fins to help protect them from enemies and harm. Their offspring actually have a fairly high survival rate when compared to other fish. The males chase away the females and take over protecting the eggs and babies in the nest. Although bluegills are small, they are actually related quite closely to the black bass."
In New Horizons
When donating to Blathers or selecting "Tell me about this!" in New Horizons, he will provide the following information about the fish:
"The bluegill is incredibly common. A bit too common, depending upon where you are. They eat anything that fits in their mouths and are highly adaptable. The bane of fishermen in some areas, bluegill is often the only fish to be caught! But looking in its wee beady eyes, I must say I see no ill will in it..."
Once donated to the museum, the bluegill can be found in the recessed tank in the main exhibit room with the black bass and koi.
Fishing Tourney
During a Fishing Tourney, when given a bluegill, Chip will say the following dialogue.
In City Folk
"But, oh, can I see it now! Breaded bluegill straight outta the pan! Nummers! Nyuuuk nyuk nyuk nyuk!"
In New Leaf
"Bluegills are definitely the sort of fish you wanna deep fry. No doubt! With some warm bread on the side... Or, you know, just slurp 'em down raw like I do. YUM!"
Of tropical sunfish body shape, the bluegill's most notable feature is the blue or black "ear", actually an extension of the gill cover called the opercular flap. Its name, however, comes from the bright blue edging visible on its gill rakers.
Also called the bream, this fish tastes nice. It is very common and often fished. Catfish, bass and turtles prey on the bluegill. More information on this topic is available at Wikipedia.
Names in other languages
ブルーギル burūgiru
Bluegill
블루길 beullugil
Bluegill
蓝腮太阳鱼 lánsāi tàiyángyú
Bluegill (lit. "blue-gilled sunfish")
藍腮太陽魚 Unknown
Солнечник Solnechnik
Zonnebaars
Sunfish
Sonnenbarsch
Sunfish
Pez sol
Literally, "sun fish".
Crapet
Lepomis
Pesce persico
Bluegill
Notes
↑All bugs and fish in the first-generation games can appear at a lower spawn rate up to five days before the start of their first month of availability.