i have a male betta in a 25 gallon aquarium with 8 cherry barbs, 6 leopard danios and 4 peppered cory cats. i noticed yesterday that his fins might be getting nipped by the other fish or ripped on the plastic plants and im thinking about moving him into his own tank. i currently have a 1/2 gallon betta jar. now this obviously way to small for him so i'm gonna purchase a new tank for him probably between 2-5 gallon in size. can anyone give some advice because he might get depressed going from a 25 gallon to a 2-5 gallon tank?