20 Gallon Tank Why are my corydoras swimming up and down the walls and are so active??

Hi guys, so I got some new sterbai corydoras for my 20 long BUT they are just swimming up and down they walls so active like insane active. Is this normal? They are juveniles about 1-2 months old so they aren't fully grown and breeding, that's for sure. DoubleDutch , can you help please?

Info:

Tank size: 20 gallon long. It is planted

FIltration: Sponge filter

Fish: 1 male betta, 7 harlequin rasboras (planning to get a few more), 6 sterbai corydoras (planning to breed them when they are of age)

Temp of tank: 80 F

As I said, is swimming up and down the walls and crazy active normal?

 

Sounds like they’re just exploring the new tank Whenever I redo my tanks or move around some plants my corys go nuts and start exploring everything.

 

Sounds like they’re just exploring the new tank Whenever I redo my tanks or move around some plants my corys go nuts and start exploring everything.

It has been 16 hours though, almost a day. Though I guess it's normal behavior. They have settled down a bit but not by much.

 

It is somekind of stressreduction and I have been told it is a kind of "calibration" to their new surroundings as well.

Got 4 new sterbai and moved 2 older ones : those do exact the same in their new tank.

 

It is some kind of stress reduction and I have been told it is a kind of "calibration" to their new surroundings as well.

Got 4 new sterbai and moved 2 older ones : those do exact the same in their new tank.

Oh, okay. So, their dance of swimming up and down the walls should eventually go away within time. I added API stress coat so if they do have stress it should reduce it. Besides, the corydoras swimming up and down is kind of annoying the betta, lol. But the betta is chill.

 

Oh, okay. So, their dance of swimming up and down the walls should eventually go away within time. I added API stress coat so if they do have stress it should reduce it. Besides, the corydoras swimming up and down is kind of annoying the betta, lol. But the betta is chill.

"stress" has another meaning in this case.
It isn't a tranquilizer or something like that.
It is meand to "treat" minor damage to the slimecoat / skin of the fish by catching, handling, transport a.s.o.

 

Cories are super weird lol. Mine go through hyper spurts like that..

 

"stress" has another meaning in this case.
It isn't a tranquilizer or something like that.
It is meand to "treat" minor damage to the slimecoat / skin of the fish by catching, handling, transport a.s.o.

Oh, well in that case it might have helped with any damaged fins, slime coat, etc. At least it did something, lol. Anyway, thanks for the information DoubleDutch. I appreciate it.

Cories are super weird lol. Mine go through hyper spurts like that..

Lol, I just got them and they are weird in a funny way. They use their barbels to slurp up bloodworms like spaghetti and then regurgitate it. They do a bunch of other funny stuff too.