Is my fish stressed or happy?

[ChrystaKay]

My fish David Bowie has become extremely active since he has been put in his slightly larger tank with a filtration system (he has never had a filtration system before). His little fins are constantly fluttering, he dodges around very quickly, and he likes to flare out his gills at his tank heater. He has never been this active, and I can't tell if it's because he's happy or because he's freaked out by his new tank.

[sainthogan]

How strong is the filter flow? If it's too strong, he could be trying to get away from it. Does he look like he's trying to figure out how to get out of there, is he constantly flaring or trying to hide behind something? But it could be that he likes his new larger tank. My female became much more active when she went into her bigger tank, simply because she had more room to move around and explore. How big is his new tank and how big was his old one?

[ChrystaKay]

The flow is not that strong, it looks like it's barely moving the plants in the tank. His old one was only 1 gallon, this one's 2. He kind of searches around the bottom edges of the tank every once in a while.

[sainthogan]

I would say that he's fine then, probably just exploring his new space.

[ChrystaKay]

Okay, thank you!