What decorations can be used?
Oscars are large fish and like to have open swimming areas, so a tank packed full or rocks, driftwood, plants, etc. wouldn’t be a really good idea. That said, there is nothing wrong with a few decorations. Just make sure there are no sharp edges that the fish could cut itself on. Some of the most common decorations in oscar tanks are large terracotta pots, driftwood, rocks and artificial plants that are aquarium safe. Pots should be large enough for the fish to get into and turn around in without getting stuck. Pots, driftwood, and rocks should also be heavy enough so that the fish can’t move them around easily or knock them up against the glass. Sample of a tank decorated using a pot, driftwood, and artificial plants (in this case, the artificial plants are all attached to the driftwood and pot using plastic zip ties).
