I have had Bluegill successfully breed when like that and live for at least several months although I would loose track of most under the ice. Indoors where I see it the most, none of the fish live past eight months because already slated to be terminated. Siblings normal. Last round we had several pop up after handling fish and grading intensively. The color pattern is easy to see on light background but can be hard when same fish moved to a dark background.

Aquaculture
Cooperative Research / Extension
Lincoln University of Missouri