Fattening foods

[Trainer_Ruby_]

I recently rescued a betta and I've notice he's very skinny what are some fish flakes that I can use to fatten him up a bit? I use a combination of tetramin omega one and bloodworms and brine shrimp. Anything else I should add to the diet for him?
Note:fed a different type of food every other day shrimp on Saturday's worms on Sunday's


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