Nice drawing. Most fish eggs ( LMB , BG , RES , FH and tilapia)will not be a problem as the eggs will not be viable if off the nest. However the scatter spawners ( TShad , GShiners etc ) could be. More likely that yoy/fry swimming through the pipe will be a problem. However be careful if you have GSF as they are known to jump long distances to get to new water.

I would suggest that some type of screening process to keep very small fry from using the pipe is a must. You will have to devise a method to do that without blocking up the water flow.