Fish that need alot of oxygen!

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SteveR

Jack Dempsey
MFK Member
Jul 1, 2008
1,359
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Scotland
Been thinking about this for a while now since I seem to have kept most fish who are the most needy of extremely high levels of o2 in the water.

I've kept bala sharks, tinfoils and currently have clowns.

What would everyone say is the fish at the top of this scale? I would guess tinfoils?

I know the loaches aren't the worst for it are they?

Plecs are probably the guys at the other end since they can gulp air when it is low (seen it happen in my tank years ago)

Would be cool to make some sort of a list on this from most to least.
 
Coldwater species like trout and char need high levels of oxygen. It's the main reason they don't do well in temps above 65*F.
 
Anything that lives in hillstreams, rapids, coldwater, and brookstreams usually needs a lot of dissolved oxygen.
 
i've noticed my purple spot goby is usually breathing pretty hard. it didn't occur to me till now that they are a cold water species. i'm going to drop the temp and add a powerhead.
 
As said coldwater/high current species...add shiners, darters, dace to the list.

On the low end I'm thinking the obvious lungfish, then the more dedicated air gulpers like bichirs and gars.
 
Have plenty of oxygenated and cool water if you want to keep sturgeon.
 
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