I would decorate the tanks with large boulder type rocks and caves..since doviis like to make there home in the banks of rivers..so the rocks would give them places to retreat at nite..but other then that driftwood would look nice and so would plastic plants that are really anchored down..
as for feeding anything meaty such as kril, beefheart, silversides, shrimp, also vegetable matter should be in his diet..ghost shrimp is a good live food..do not feed him or her feeders unless they wre quarentined for a couple of weeks and bulked up with vegetable matter..other then that hikari or omega one pellets are the best choice for dried food..any other questions feel free to pm me or just leave a reply..
hope this helped
dovii88