My fingers are in every tank every day when I feed regardless of whether I'm hand feeding and shrimp doesn't chop itself up.
We already treat rays like puppies by bringing them out of the wild and putting them in tiny boxes of water.
We already treat rays like puppies by bringing them out of the wild and putting them in tiny boxes of water.
As for as contaminating the tank, if I didn't reach in, it would never get cleaned.