Hello guys can anyone please help me if my senegal bichir attitude is normal I have a 55g he's still 4-5 inches and will upgrade soon but I did 20% water change this morning and placed a small housing for him. After placing his housing he always stays there barely swimming, but before without a house he was so active. Swimming around and gulping for air and jumping outside the water. Thank you guys it's my first ever fish and tank 