Recently adopted a 2.5-3" bristlenose pleco in my 55 (was getting his butt kicked by a featherfin) and he seems to be doing great as my tank has many more hiding spots under plants and driftwood, and no shortage of algae. His favorite spot seems to be under a huge chunk of driftwood. Several times now, we've found him under the driftwood laying on his back, his mouth upwards but quite a ways from the wood, or any other surface where there might be algae. He eats well, loves the algae and carnivore pellets, and seems fairly active for a nocturnal fish. Is laying on his back normal for plecos?