Food quality and quantity I think are roughly similar. What likely sets indoor ahead is the warmer temperature. The tank does experience a range of temperatures that are likely on average below what is optimal for BG larvae and fry. The indoor setup holds a very steady 25 C where growth rates we see at least match best you can find in the literature. That said, we do not know optimal temperature for such early life-stage BG, regardless of subspecies.
Aquaculture Cooperative Research / Extension Lincoln University of Missouri
