Rod, that's a tough question because this pond does not have super clear water, hence I didn't know of any species (BG, YP, SMB) having successful spawns.

I have now seen that BG did pull off a spawn, and SMB did also, but I can't say how that would have helped create forages fish for all the other mouths.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."