Semi-aggressive fish for 40 gallon

[evil wizard]

Not semi aggressive but how about giant danios? Grow to 4 inches and are fast.

 

[rufioman]

Too big for 40g. They swim heavily and quickly, needing at least a 55g to be happy as adults. Growing them out in there would work.

 

[evil wizard]

I was wondering if they are semi aggressive?

 

[Tifftastic]

I was wondering if they are semi aggressive?

In my experience, giant danios can be nippy and they get large. They shouldn't be considered peaceful because of that, but they aren't as territorial as something like a cichlid or as predatory as a catfish or gar. So, they lie in the middle of an "aggressive" and a peaceful fish. I know a lot of people that recommend or use them as dither fish for cichlid tanks because they're quick, large, and not easily stressed.

 

[evil wizard]

So it is somewhere between peaceful and semi aggressive?

 

[Tifftastic]

After working at PetSmart for six years I kind of hate the term "semi-aggressive" as it doesn't really tell you much. Giant Danios would probably be considered that though, but that's because they're VERY active, large, and fairly nippy.

 

[eeyipes]

I have various colors of tiger barbs in my 36 with rosie barbs.

 

[evil wizard]

Yep there are many colors and variations. Marbled TB, glolight TB, long finned TB, albino TB......That's all I can think of for the moment.

 

[LMOUTHBASS]

Dwarf Pike are pretty cool looking