My platy was pregnant so I placed her in a breeding trap to have her fry. All was well and she finished having her babies so I gentally removed her and when I moved the trap (and even while sitting still) fry managed to pass the sub floor and went into the grate area where they fell out and were eaten..all but one. Am I setting it up wrong or what? Thanks. (Here's a picture of the breeding trap, you can see one fry down by the grate).