I have a purple H. crispa that I've had for more than 3 years, and it is doing very well.
Today I was swapping in some new stream pumps for the Tunze powerheads that I had, and much of the circulation was off for about 20 minutes during bright lighting.
Interestingly, the crispa opened its mouth pretty wide, apparently not getting enough water flow. It is often hard to see the mouth, but it certainly closed up not long after the flow came back on. I've never ever seen it do that before.
Do others notice this effect when water flow drops a lot for some reason? I guess it makes sense, I just did not expect it.
Today I was swapping in some new stream pumps for the Tunze powerheads that I had, and much of the circulation was off for about 20 minutes during bright lighting.
Interestingly, the crispa opened its mouth pretty wide, apparently not getting enough water flow. It is often hard to see the mouth, but it certainly closed up not long after the flow came back on. I've never ever seen it do that before.
Do others notice this effect when water flow drops a lot for some reason? I guess it makes sense, I just did not expect it.