Any chance you could get more photos or a video of the Tucanos in a main tank (planted or what not)? Not too much out there on them, but I know they are great looking. Little pricey, but nice.
Would be cool if you could video their spawning behavior as well.
Just that this "breeding" thread is not very clear.
I have 14 mature in a tank. Some have very distinctive red lateral fin pointing to male.
And some suspected female also has a little red on the rounded end.
Unless I have 14 males. Else I find that its not a 100% accurate way to distinguish sexes of this tetra.