Water Surface Currents

[ickle]

I recently purchased a betta for my 30L biOrb but had to remove it as it was harassing the other fish.

Some people have suggested that I ditch the other fish (neons) in favour of the betta.

Now that the betta is in a bowl of its own, I have noticed that it is less neurotic in behaviour than when it was in the biOrb. It now drifts along quite gracefully, whereas in the biOrb it was swimming like crazy up and down, back and forth, and all over the tank.

Since the biOrb has a filtration system that bubbles up in the centre, there is alot of disturbance to the water surface. I am now wondering if the aggressive behaviour of the betta was aggravated because it felt uncomfortable in a tank with fast water surface currents. I am not sure if the betta will be happy living inside the biOrb.

I was just wondering what sort of fish like/don't like water surface currants?

 

[annka5]

Basically, fish that don't like currents TEND to be those with the long flowing fins (e.g. betta) or compressed (like angelfish or discus) - the ones that just don't look aeordynamic (or whatever the watery equivalent is) generally are the ones that appreciate a current least.
If you know the natural habitat, then that makes it easier. However, you need to knwo a bit more detail than you might think - e.g. some fish live in rivers which would suggst they would like a current but then if they actually live in quiet sheltered stretches of the river (e.g. discus) and so don't like current.
Did you want specific fish or a general idea..?

 

[ickle]

Basically, fish that don't like currents TEND to be those with the long flowing fins (e.g. betta) or compressed (like angelfish or discus) - the ones that just don't look aeordynamic (or whatever the watery equivalent is) generally are the ones that appreciate a current least.
If you know the natural habitat, then that makes it easier. However, you need to knwo a bit more detail than you might think - e.g. some fish live in rivers which would suggst they would like a current but then if they actually live in quiet sheltered stretches of the river (e.g. discus) and so don't like current.
Did you want specific fish or a general idea..?

Well, it would be a useful if I knew which common small aquarium fish would be okay with currents. What about other labyrinth fish like gouramis? Or small decorative fish like guppies?

 

[annka5]

Gourami come from pretty still water, so they wouldn't appreciate really strong currents. The amount in an average tank would be Ok though. They do come to the surface for air every so often, but don't have the excessive fins of a male betta, so could cope more effectively.
Guppies aren't great with currents because they have such long flowing tails; however, as with gourami, so long as it isn't too strong they'd be OK.
Tetras and similar "streamlined" looking fish would be fine.