I got 2 bettas 3 days ago. Sonic and King.
King is very happy, he eats and swims like hes loving life. He lives in a 1.5 heated tank.
BUT Sonic doesnt seem as happy.... He lives in a even bigger 3 gallon heated tank. He has not ate since I got him. When I first saw him, his fins looked beautiful, now he doesnt "show them off" as much. Should I be worried? Is he stressed? This is the tank I have for him
Think it would be best to take out the middle cylinder to give him more room, even though its an airstone filter?