Of course you can, but it depends on what kind of fish tank it is. The cozy restaurant I opened has exquisite small fish tanks, which are very attractive to customers, but don’t put ordinary fish tanks. I started to put ordinary fish tanks. No one thought it was strange. Later, I occasionally found a store selling strange-shaped ones at the flower and bird market. They all liked them very much after buying them. Business has naturally improved a lot. Especially children. Many mothers say that as soon as they go out to eat, their children will come to my place, so they all have to come to my place.