My snake(garter) is the hardest snake to feed. I have to get it LIVE fish without spending alot of $$$! I ussually go to a pond and there are LOTS of little fishes and i ussually got 40-50 but now i only get 9

i have tried feeding it alot of stuff like salmon,canned tuna,crab,earthworms,and ALL sorts of bugs! I feed it regurlarly and yesterday i find that 1 of them(i had 2) is missing!! and i notice how big my other snake got. It might have ate the other one because it;s pretty hard to get out of there. I need to know what to feed it. and yes i do scent the food.
[addsig]