Great fish.Take a look at the average pet dog, or cat, the vast majority in North America are obese. It's typically not the foods fault, in most cases it's a simple case of operator error. (over feeding) I feed 100% commercial pellet food, and I don't own any obese fish. A hungry fish is a healthy fish.
My 13+" 7 yr old male midas
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I have to admit I still struggling with feeding proper amounts daily. I said in a thread I found that a month ago that I've added two fasting days a week to my display tank.
The problem, of.course, is that when I watch the tank, I see the fish looking for food (the clown Loaches especially are always digging away) and I want to feed them.
Since I made that post, I tell myself it's healthier to fast them 1-2 times a week and as you said above, it's a good thing that they are a bit hungry. It also should be obvious to me that they are always gonna be looking for food as when I feed them I the morning they are digging away like when I didn't feed them.
I do find it easier to fast them when I'm going to be gone most of the day or evening so I don't see them digging around (or coming to the glass expecting food).