So I'm obviously a novice at garter snake care, but I'm pretty sure Matt is starting to get a bit chunky. The pet store I go to (a Petco in NYC) has several feeding options, but no safe feeder fish (they have frozen pinkies, goldfish and worms). Is there any feeding and/or exercise advice you guys could give me to help slim her down? Especially if any of you live in Manhattan and know of another store (preferably near Central Park) that has good fish or other diet options.

I feed her around once a week and she usually poops twice during that week. I take her out of the cage to move around a bit and sometimes swim in the sink, but I don't think it's enough exercise. She has a 10 gallon tank, would be a stretch to fit anything bigger in my small apartment, though it is possible.

First few weeks I had her - Was eating minnows and goldfish until I found out that these were dangerous

Since then (about four months) - eats three pinkies a week, once in a while I'll give her some fish fillet during the week, but just a bite (would be equivalent to around 1 or 2 goldfish in size).

I've never fed her worms since they always seem like they're dead or the wrong kind at Petco and my wife would probably stab me if I kept worms in the fridge anyway. Thinking of feeding her two pinkies a week instead, but don't want her to be hungry and uncomfortable.

Should I feed her more often but smaller portions? Maybe a pinkie every few days? Thanks for the help.