Seabass and tog are two strange acting fish. Last year one of our two seabass would dig into the gravel like you described.
Years ago I had plastic plants set up in the back of the tank. They would sway back and forth from the filter pressure. Whenever Someone came into the room the seabass would swim inside the plants, stand on their heads and sway with the plant movements.
Some fish will always be shy and it's not just species. Like I said before. One bass would dig into the gravel and the other would come right up to the glass and stare at you. They are as different as people.
Years ago I had plastic plants set up in the back of the tank. They would sway back and forth from the filter pressure. Whenever Someone came into the room the seabass would swim inside the plants, stand on their heads and sway with the plant movements.
Some fish will always be shy and it's not just species. Like I said before. One bass would dig into the gravel and the other would come right up to the glass and stare at you. They are as different as people.