my parents wont let me buy a snake but they said if i can catch one i can keep it if its not big and every year i catch about 10 garter snakes and i have a 20gallon tank,i dont want to hurt the snake so how can i catch it right like, if its under a rock when i lift it should i grab its tail or what, and also i cant buy and thing for it but will garter ssnakes eat cray fish because i can catch them all sizes, and last what should my tank be like how mutch water and what are some kinda things i can make or ideas,thanks